This code is required for upcoming NVMEM changes.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+++ /dev/null
-From 83216e3988cd196183542937c9bd58b279f946af Mon Sep 17 00:00:00 2001
-From: Michael Walle <michael@walle.cc>
-Date: Mon, 12 Apr 2021 19:47:17 +0200
-Subject: of: net: pass the dst buffer to of_get_mac_address()
-
-of_get_mac_address() returns a "const void*" pointer to a MAC address.
-Lately, support to fetch the MAC address by an NVMEM provider was added.
-But this will only work with platform devices. It will not work with
-PCI devices (e.g. of an integrated root complex) and esp. not with DSA
-ports.
-
-There is an of_* variant of the nvmem binding which works without
-devices. The returned data of a nvmem_cell_read() has to be freed after
-use. On the other hand the return of_get_mac_address() points to some
-static data without a lifetime. The trick for now, was to allocate a
-device resource managed buffer which is then returned. This will only
-work if we have an actual device.
-
-Change it, so that the caller of of_get_mac_address() has to supply a
-buffer where the MAC address is written to. Unfortunately, this will
-touch all drivers which use the of_get_mac_address().
-
-Usually the code looks like:
-
- const char *addr;
- addr = of_get_mac_address(np);
- if (!IS_ERR(addr))
- ether_addr_copy(ndev->dev_addr, addr);
-
-This can then be simply rewritten as:
-
- of_get_mac_address(np, ndev->dev_addr);
-
-Sometimes is_valid_ether_addr() is used to test the MAC address.
-of_get_mac_address() already makes sure, it just returns a valid MAC
-address. Thus we can just test its return code. But we have to be
-careful if there are still other sources for the MAC address before the
-of_get_mac_address(). In this case we have to keep the
-is_valid_ether_addr() call.
-
-The following coccinelle patch was used to convert common cases to the
-new style. Afterwards, I've manually gone over the drivers and fixed the
-return code variable: either used a new one or if one was already
-available use that. Mansour Moufid, thanks for that coccinelle patch!
-
-<spml>
-@a@
-identifier x;
-expression y, z;
-@@
-- x = of_get_mac_address(y);
-+ x = of_get_mac_address(y, z);
- <...
-- ether_addr_copy(z, x);
- ...>
-
-@@
-identifier a.x;
-@@
-- if (<+... x ...+>) {}
-
-@@
-identifier a.x;
-@@
- if (<+... x ...+>) {
- ...
- }
-- else {}
-
-@@
-identifier a.x;
-expression e;
-@@
-- if (<+... x ...+>@e)
-- {}
-- else
-+ if (!(e))
- {...}
-
-@@
-expression x, y, z;
-@@
-- x = of_get_mac_address(y, z);
-+ of_get_mac_address(y, z);
- ... when != x
-</spml>
-
-All drivers, except drivers/net/ethernet/aeroflex/greth.c, were
-compile-time tested.
-
-Suggested-by: Andrew Lunn <andrew@lunn.ch>
-Signed-off-by: Michael Walle <michael@walle.cc>
-Reviewed-by: Andrew Lunn <andrew@lunn.ch>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- arch/arm/mach-mvebu/kirkwood.c | 3 +-
- arch/powerpc/sysdev/tsi108_dev.c | 5 +-
- drivers/net/ethernet/aeroflex/greth.c | 6 +--
- drivers/net/ethernet/allwinner/sun4i-emac.c | 10 ++--
- drivers/net/ethernet/altera/altera_tse_main.c | 7 +--
- drivers/net/ethernet/arc/emac_main.c | 8 +--
- drivers/net/ethernet/atheros/ag71xx.c | 7 +--
- drivers/net/ethernet/broadcom/bcm4908_enet.c | 7 +--
- drivers/net/ethernet/broadcom/bcmsysport.c | 7 +--
- drivers/net/ethernet/broadcom/bgmac-bcma.c | 10 ++--
- drivers/net/ethernet/broadcom/bgmac-platform.c | 11 ++--
- drivers/net/ethernet/cadence/macb_main.c | 11 ++--
- drivers/net/ethernet/cavium/octeon/octeon_mgmt.c | 8 +--
- drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 5 +-
- drivers/net/ethernet/davicom/dm9000.c | 10 ++--
- drivers/net/ethernet/ethoc.c | 6 +--
- drivers/net/ethernet/ezchip/nps_enet.c | 7 +--
- drivers/net/ethernet/freescale/fec_main.c | 7 +--
- drivers/net/ethernet/freescale/fec_mpc52xx.c | 7 +--
- drivers/net/ethernet/freescale/fman/mac.c | 9 ++--
- .../net/ethernet/freescale/fs_enet/fs_enet-main.c | 5 +-
- drivers/net/ethernet/freescale/gianfar.c | 8 +--
- drivers/net/ethernet/freescale/ucc_geth.c | 5 +-
- drivers/net/ethernet/hisilicon/hisi_femac.c | 7 +--
- drivers/net/ethernet/hisilicon/hix5hd2_gmac.c | 7 +--
- drivers/net/ethernet/lantiq_xrx200.c | 7 +--
- drivers/net/ethernet/marvell/mv643xx_eth.c | 5 +-
- drivers/net/ethernet/marvell/mvneta.c | 6 +--
- .../net/ethernet/marvell/prestera/prestera_main.c | 11 ++--
- drivers/net/ethernet/marvell/pxa168_eth.c | 9 +---
- drivers/net/ethernet/marvell/sky2.c | 8 ++-
- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 11 ++--
- drivers/net/ethernet/micrel/ks8851_common.c | 7 ++-
- drivers/net/ethernet/microchip/lan743x_main.c | 5 +-
- drivers/net/ethernet/nxp/lpc_eth.c | 4 +-
- drivers/net/ethernet/qualcomm/qca_spi.c | 10 ++--
- drivers/net/ethernet/qualcomm/qca_uart.c | 9 +---
- drivers/net/ethernet/renesas/ravb_main.c | 12 +++--
- drivers/net/ethernet/renesas/sh_eth.c | 5 +-
- .../net/ethernet/samsung/sxgbe/sxgbe_platform.c | 13 ++---
- drivers/net/ethernet/socionext/sni_ave.c | 10 ++--
- .../net/ethernet/stmicro/stmmac/dwmac-anarion.c | 2 +-
- .../ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 2 +-
- .../net/ethernet/stmicro/stmmac/dwmac-generic.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c | 2 +-
- .../net/ethernet/stmicro/stmmac/dwmac-intel-plat.c | 2 +-
- .../net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 2 +-
- .../net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c | 2 +-
- .../net/ethernet/stmicro/stmmac/dwmac-mediatek.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c | 2 +-
- .../net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c | 2 +-
- .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 2 +-
- .../net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 2 +-
- .../net/ethernet/stmicro/stmmac/dwmac-visconti.c | 2 +-
- drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 +-
- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
- .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 14 ++---
- .../net/ethernet/stmicro/stmmac/stmmac_platform.h | 2 +-
- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 19 ++++---
- drivers/net/ethernet/ti/cpsw.c | 7 +--
- drivers/net/ethernet/ti/cpsw_new.c | 7 +--
- drivers/net/ethernet/ti/davinci_emac.c | 8 +--
- drivers/net/ethernet/ti/netcp_core.c | 7 +--
- drivers/net/ethernet/wiznet/w5100-spi.c | 8 ++-
- drivers/net/ethernet/wiznet/w5100.c | 2 +-
- drivers/net/ethernet/xilinx/ll_temac_main.c | 8 +--
- drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 15 +++---
- drivers/net/ethernet/xilinx/xilinx_emaclite.c | 8 +--
- drivers/net/wireless/ath/ath9k/init.c | 5 +-
- drivers/net/wireless/mediatek/mt76/eeprom.c | 9 +---
- drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 6 +--
- drivers/of/of_net.c | 60 ++++++++++------------
- drivers/staging/octeon/ethernet.c | 10 ++--
- drivers/staging/wfx/main.c | 7 ++-
- include/linux/of_net.h | 6 +--
- include/net/dsa.h | 2 +-
- net/dsa/dsa2.c | 2 +-
- net/dsa/slave.c | 2 +-
- net/ethernet/eth.c | 11 ++--
- 85 files changed, 218 insertions(+), 364 deletions(-)
-
---- a/arch/arm/mach-mvebu/kirkwood.c
-+++ b/arch/arm/mach-mvebu/kirkwood.c
-@@ -84,6 +84,7 @@ static void __init kirkwood_dt_eth_fixup
- struct device_node *pnp = of_get_parent(np);
- struct clk *clk;
- struct property *pmac;
-+ u8 tmpmac[ETH_ALEN];
- void __iomem *io;
- u8 *macaddr;
- u32 reg;
-@@ -93,7 +94,7 @@ static void __init kirkwood_dt_eth_fixup
-
- /* skip disabled nodes or nodes with valid MAC address*/
- if (!of_device_is_available(pnp) ||
-- !IS_ERR(of_get_mac_address(np)))
-+ !of_get_mac_address(np, tmpmac))
- goto eth_fixup_skip;
-
- clk = of_clk_get(pnp, 0);
---- a/arch/powerpc/sysdev/tsi108_dev.c
-+++ b/arch/powerpc/sysdev/tsi108_dev.c
-@@ -73,7 +73,6 @@ static int __init tsi108_eth_of_init(voi
- struct device_node *phy, *mdio;
- hw_info tsi_eth_data;
- const unsigned int *phy_id;
-- const void *mac_addr;
- const phandle *ph;
-
- memset(r, 0, sizeof(r));
-@@ -101,9 +100,7 @@ static int __init tsi108_eth_of_init(voi
- goto err;
- }
-
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(tsi_eth_data.mac_addr, mac_addr);
-+ of_get_mac_address(np, tsi_eth_data.mac_addr);
-
- ph = of_get_property(np, "mdio-handle", NULL);
- mdio = of_find_node_by_phandle(*ph);
---- a/drivers/net/ethernet/aeroflex/greth.c
-+++ b/drivers/net/ethernet/aeroflex/greth.c
-@@ -1450,10 +1450,10 @@ static int greth_of_probe(struct platfor
- break;
- }
- if (i == 6) {
-- const u8 *addr;
-+ u8 addr[ETH_ALEN];
-
-- addr = of_get_mac_address(ofdev->dev.of_node);
-- if (!IS_ERR(addr)) {
-+ err = of_get_mac_address(ofdev->dev.of_node, addr);
-+ if (!err) {
- for (i = 0; i < 6; i++)
- macaddr[i] = (unsigned int) addr[i];
- } else {
---- a/drivers/net/ethernet/allwinner/sun4i-emac.c
-+++ b/drivers/net/ethernet/allwinner/sun4i-emac.c
-@@ -790,7 +790,6 @@ static int emac_probe(struct platform_de
- struct emac_board_info *db;
- struct net_device *ndev;
- int ret = 0;
-- const char *mac_addr;
-
- ndev = alloc_etherdev(sizeof(struct emac_board_info));
- if (!ndev) {
-@@ -853,12 +852,9 @@ static int emac_probe(struct platform_de
- }
-
- /* Read MAC-address from DT */
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ndev->dev_addr, mac_addr);
--
-- /* Check if the MAC address is valid, if not get a random one */
-- if (!is_valid_ether_addr(ndev->dev_addr)) {
-+ ret = of_get_mac_address(np, ndev->dev_addr);
-+ if (ret) {
-+ /* if the MAC address is invalid get a random one */
- eth_hw_addr_random(ndev);
- dev_warn(&pdev->dev, "using random MAC address %pM\n",
- ndev->dev_addr);
---- a/drivers/net/ethernet/altera/altera_tse_main.c
-+++ b/drivers/net/ethernet/altera/altera_tse_main.c
-@@ -1355,7 +1355,6 @@ static int altera_tse_probe(struct platf
- struct resource *control_port;
- struct resource *dma_res;
- struct altera_tse_private *priv;
-- const unsigned char *macaddr;
- void __iomem *descmap;
- const struct of_device_id *of_id = NULL;
-
-@@ -1532,10 +1531,8 @@ static int altera_tse_probe(struct platf
- priv->rx_dma_buf_sz = ALTERA_RXDMABUFFER_SIZE;
-
- /* get default MAC address from device tree */
-- macaddr = of_get_mac_address(pdev->dev.of_node);
-- if (!IS_ERR(macaddr))
-- ether_addr_copy(ndev->dev_addr, macaddr);
-- else
-+ ret = of_get_mac_address(pdev->dev.of_node, ndev->dev_addr);
-+ if (ret)
- eth_hw_addr_random(ndev);
-
- /* get phy addr and create mdio */
---- a/drivers/net/ethernet/arc/emac_main.c
-+++ b/drivers/net/ethernet/arc/emac_main.c
-@@ -857,7 +857,6 @@ int arc_emac_probe(struct net_device *nd
- struct device_node *phy_node;
- struct phy_device *phydev = NULL;
- struct arc_emac_priv *priv;
-- const char *mac_addr;
- unsigned int id, clock_frequency, irq;
- int err;
-
-@@ -942,11 +941,8 @@ int arc_emac_probe(struct net_device *nd
- }
-
- /* Get MAC address from device tree */
-- mac_addr = of_get_mac_address(dev->of_node);
--
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ndev->dev_addr, mac_addr);
-- else
-+ err = of_get_mac_address(dev->of_node, ndev->dev_addr);
-+ if (err)
- eth_hw_addr_random(ndev);
-
- arc_emac_set_address_internal(ndev);
---- a/drivers/net/ethernet/atheros/ag71xx.c
-+++ b/drivers/net/ethernet/atheros/ag71xx.c
-@@ -1857,7 +1857,6 @@ static int ag71xx_probe(struct platform_
- const struct ag71xx_dcfg *dcfg;
- struct net_device *ndev;
- struct resource *res;
-- const void *mac_addr;
- int tx_size, err, i;
- struct ag71xx *ag;
-
-@@ -1953,10 +1952,8 @@ static int ag71xx_probe(struct platform_
- ag->stop_desc->ctrl = 0;
- ag->stop_desc->next = (u32)ag->stop_desc_dma;
-
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- memcpy(ndev->dev_addr, mac_addr, ETH_ALEN);
-- if (IS_ERR(mac_addr) || !is_valid_ether_addr(ndev->dev_addr)) {
-+ err = of_get_mac_address(np, ndev->dev_addr);
-+ if (err) {
- netif_err(ag, probe, ndev, "invalid MAC address, using random address\n");
- eth_random_addr(ndev->dev_addr);
- }
---- a/drivers/net/ethernet/broadcom/bcmsysport.c
-+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
-@@ -2468,7 +2468,6 @@ static int bcm_sysport_probe(struct plat
- struct bcm_sysport_priv *priv;
- struct device_node *dn;
- struct net_device *dev;
-- const void *macaddr;
- u32 txq, rxq;
- int ret;
-
-@@ -2563,12 +2562,10 @@ static int bcm_sysport_probe(struct plat
- }
-
- /* Initialize netdevice members */
-- macaddr = of_get_mac_address(dn);
-- if (IS_ERR(macaddr)) {
-+ ret = of_get_mac_address(dn, dev->dev_addr);
-+ if (ret) {
- dev_warn(&pdev->dev, "using random Ethernet MAC\n");
- eth_hw_addr_random(dev);
-- } else {
-- ether_addr_copy(dev->dev_addr, macaddr);
- }
-
- SET_NETDEV_DEV(dev, &pdev->dev);
---- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
-+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
-@@ -115,7 +115,7 @@ static int bgmac_probe(struct bcma_devic
- struct ssb_sprom *sprom = &core->bus->sprom;
- struct mii_bus *mii_bus;
- struct bgmac *bgmac;
-- const u8 *mac = NULL;
-+ const u8 *mac;
- int err;
-
- bgmac = bgmac_alloc(&core->dev);
-@@ -128,11 +128,10 @@ static int bgmac_probe(struct bcma_devic
-
- bcma_set_drvdata(core, bgmac);
-
-- if (bgmac->dev->of_node)
-- mac = of_get_mac_address(bgmac->dev->of_node);
-+ err = of_get_mac_address(bgmac->dev->of_node, bgmac->net_dev->dev_addr);
-
- /* If no MAC address assigned via device tree, check SPROM */
-- if (IS_ERR_OR_NULL(mac)) {
-+ if (err) {
- switch (core->core_unit) {
- case 0:
- mac = sprom->et0mac;
-@@ -149,10 +148,9 @@ static int bgmac_probe(struct bcma_devic
- err = -ENOTSUPP;
- goto err;
- }
-+ ether_addr_copy(bgmac->net_dev->dev_addr, mac);
- }
-
-- ether_addr_copy(bgmac->net_dev->dev_addr, mac);
--
- /* On BCM4706 we need common core to access PHY */
- if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
- !core->bus->drv_gmac_cmn.core) {
---- a/drivers/net/ethernet/broadcom/bgmac-platform.c
-+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
-@@ -173,7 +173,7 @@ static int bgmac_probe(struct platform_d
- struct device_node *np = pdev->dev.of_node;
- struct bgmac *bgmac;
- struct resource *regs;
-- const u8 *mac_addr;
-+ int ret;
-
- bgmac = bgmac_alloc(&pdev->dev);
- if (!bgmac)
-@@ -192,11 +192,10 @@ static int bgmac_probe(struct platform_d
- bgmac->dev = &pdev->dev;
- bgmac->dma_dev = &pdev->dev;
-
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(bgmac->net_dev->dev_addr, mac_addr);
-- else
-- dev_warn(&pdev->dev, "MAC address not present in device tree\n");
-+ ret = of_get_mac_address(np, bgmac->net_dev->dev_addr);
-+ if (ret)
-+ dev_warn(&pdev->dev,
-+ "MAC address not present in device tree\n");
-
- bgmac->irq = platform_get_irq(pdev, 0);
- if (bgmac->irq < 0)
---- a/drivers/net/ethernet/cadence/macb_main.c
-+++ b/drivers/net/ethernet/cadence/macb_main.c
-@@ -4487,7 +4487,6 @@ static int macb_probe(struct platform_de
- struct net_device *dev;
- struct resource *regs;
- void __iomem *mem;
-- const char *mac;
- struct macb *bp;
- int err, val;
-
-@@ -4600,15 +4599,11 @@ static int macb_probe(struct platform_de
- if (bp->caps & MACB_CAPS_NEEDS_RSTONUBR)
- bp->rx_intr_mask |= MACB_BIT(RXUBR);
-
-- mac = of_get_mac_address(np);
-- if (PTR_ERR(mac) == -EPROBE_DEFER) {
-- err = -EPROBE_DEFER;
-+ err = of_get_mac_address(np, bp->dev->dev_addr);
-+ if (err == -EPROBE_DEFER)
- goto err_out_free_netdev;
-- } else if (!IS_ERR_OR_NULL(mac)) {
-- ether_addr_copy(bp->dev->dev_addr, mac);
-- } else {
-+ else if (err)
- macb_get_hwaddr(bp);
-- }
-
- err = of_get_phy_mode(np, &interface);
- if (err)
---- a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
-+++ b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
-@@ -1385,7 +1385,6 @@ static int octeon_mgmt_probe(struct plat
- struct net_device *netdev;
- struct octeon_mgmt *p;
- const __be32 *data;
-- const u8 *mac;
- struct resource *res_mix;
- struct resource *res_agl;
- struct resource *res_agl_prt_ctl;
-@@ -1502,11 +1501,8 @@ static int octeon_mgmt_probe(struct plat
- netdev->min_mtu = 64 - OCTEON_MGMT_RX_HEADROOM;
- netdev->max_mtu = 16383 - OCTEON_MGMT_RX_HEADROOM - VLAN_HLEN;
-
-- mac = of_get_mac_address(pdev->dev.of_node);
--
-- if (!IS_ERR(mac))
-- ether_addr_copy(netdev->dev_addr, mac);
-- else
-+ result = of_get_mac_address(pdev->dev.of_node, netdev->dev_addr);
-+ if (result)
- eth_hw_addr_random(netdev);
-
- p->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
---- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
-+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
-@@ -1476,7 +1476,6 @@ static int bgx_init_of_phy(struct bgx *b
- device_for_each_child_node(&bgx->pdev->dev, fwn) {
- struct phy_device *pd;
- struct device_node *phy_np;
-- const char *mac;
-
- /* Should always be an OF node. But if it is not, we
- * cannot handle it, so exit the loop.
-@@ -1485,9 +1484,7 @@ static int bgx_init_of_phy(struct bgx *b
- if (!node)
- break;
-
-- mac = of_get_mac_address(node);
-- if (!IS_ERR(mac))
-- ether_addr_copy(bgx->lmac[lmac].mac, mac);
-+ of_get_mac_address(node, bgx->lmac[lmac].mac);
-
- SET_NETDEV_DEV(&bgx->lmac[lmac].netdev, &bgx->pdev->dev);
- bgx->lmac[lmac].lmacid = lmac;
---- a/drivers/net/ethernet/davicom/dm9000.c
-+++ b/drivers/net/ethernet/davicom/dm9000.c
-@@ -1388,7 +1388,7 @@ static struct dm9000_plat_data *dm9000_p
- {
- struct dm9000_plat_data *pdata;
- struct device_node *np = dev->of_node;
-- const void *mac_addr;
-+ int ret;
-
- if (!IS_ENABLED(CONFIG_OF) || !np)
- return ERR_PTR(-ENXIO);
-@@ -1402,11 +1402,9 @@ static struct dm9000_plat_data *dm9000_p
- if (of_find_property(np, "davicom,no-eeprom", NULL))
- pdata->flags |= DM9000_PLATF_NO_EEPROM;
-
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(pdata->dev_addr, mac_addr);
-- else if (PTR_ERR(mac_addr) == -EPROBE_DEFER)
-- return ERR_CAST(mac_addr);
-+ ret = of_get_mac_address(np, pdata->dev_addr);
-+ if (ret == -EPROBE_DEFER)
-+ return ERR_PTR(ret);
-
- return pdata;
- }
---- a/drivers/net/ethernet/ethoc.c
-+++ b/drivers/net/ethernet/ethoc.c
-@@ -1151,11 +1151,7 @@ static int ethoc_probe(struct platform_d
- ether_addr_copy(netdev->dev_addr, pdata->hwaddr);
- priv->phy_id = pdata->phy_id;
- } else {
-- const void *mac;
--
-- mac = of_get_mac_address(pdev->dev.of_node);
-- if (!IS_ERR(mac))
-- ether_addr_copy(netdev->dev_addr, mac);
-+ of_get_mac_address(pdev->dev.of_node, netdev->dev_addr);
- priv->phy_id = -1;
- }
-
---- a/drivers/net/ethernet/ezchip/nps_enet.c
-+++ b/drivers/net/ethernet/ezchip/nps_enet.c
-@@ -575,7 +575,6 @@ static s32 nps_enet_probe(struct platfor
- struct net_device *ndev;
- struct nps_enet_priv *priv;
- s32 err = 0;
-- const char *mac_addr;
-
- if (!dev->of_node)
- return -ENODEV;
-@@ -602,10 +601,8 @@ static s32 nps_enet_probe(struct platfor
- dev_dbg(dev, "Registers base address is 0x%p\n", priv->regs_base);
-
- /* set kernel MAC address to dev */
-- mac_addr = of_get_mac_address(dev->of_node);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ndev->dev_addr, mac_addr);
-- else
-+ err = of_get_mac_address(dev->of_node, ndev->dev_addr);
-+ if (err)
- eth_hw_addr_random(ndev);
-
- /* Get IRQ number */
---- a/drivers/net/ethernet/freescale/fec_main.c
-+++ b/drivers/net/ethernet/freescale/fec_main.c
-@@ -1666,6 +1666,7 @@ static void fec_get_mac(struct net_devic
- struct fec_enet_private *fep = netdev_priv(ndev);
- struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev);
- unsigned char *iap, tmpaddr[ETH_ALEN];
-+ int ret;
-
- /*
- * try to get mac address in following order:
-@@ -1681,9 +1682,9 @@ static void fec_get_mac(struct net_devic
- if (!is_valid_ether_addr(iap)) {
- struct device_node *np = fep->pdev->dev.of_node;
- if (np) {
-- const char *mac = of_get_mac_address(np);
-- if (!IS_ERR(mac))
-- iap = (unsigned char *) mac;
-+ ret = of_get_mac_address(np, tmpaddr);
-+ if (!ret)
-+ iap = tmpaddr;
- }
- }
-
---- a/drivers/net/ethernet/freescale/fec_mpc52xx.c
-+++ b/drivers/net/ethernet/freescale/fec_mpc52xx.c
-@@ -813,7 +813,6 @@ static int mpc52xx_fec_probe(struct plat
- const u32 *prop;
- int prop_size;
- struct device_node *np = op->dev.of_node;
-- const char *mac_addr;
-
- phys_addr_t rx_fifo;
- phys_addr_t tx_fifo;
-@@ -891,10 +890,8 @@ static int mpc52xx_fec_probe(struct plat
- *
- * First try to read MAC address from DT
- */
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr)) {
-- ether_addr_copy(ndev->dev_addr, mac_addr);
-- } else {
-+ rv = of_get_mac_address(np, ndev->dev_addr);
-+ if (rv) {
- struct mpc52xx_fec __iomem *fec = priv->fec;
-
- /*
---- a/drivers/net/ethernet/freescale/fman/mac.c
-+++ b/drivers/net/ethernet/freescale/fman/mac.c
-@@ -616,7 +616,6 @@ static int mac_probe(struct platform_dev
- struct platform_device *of_dev;
- struct resource res;
- struct mac_priv_s *priv;
-- const u8 *mac_addr;
- u32 val;
- u8 fman_id;
- phy_interface_t phy_if;
-@@ -734,11 +733,9 @@ static int mac_probe(struct platform_dev
- priv->cell_index = (u8)val;
-
- /* Get the MAC address */
-- mac_addr = of_get_mac_address(mac_node);
-- if (IS_ERR(mac_addr))
-+ err = of_get_mac_address(mac_node, mac_dev->addr);
-+ if (err)
- dev_warn(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
-- else
-- ether_addr_copy(mac_dev->addr, mac_addr);
-
- /* Get the port handles */
- nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL);
-@@ -864,7 +861,7 @@ static int mac_probe(struct platform_dev
- if (err < 0)
- dev_err(dev, "fman_set_mac_active_pause() = %d\n", err);
-
-- if (!IS_ERR(mac_addr))
-+ if (!is_zero_ether_addr(mac_dev->addr))
- dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
-
- priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev);
---- a/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c
-+++ b/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c
-@@ -918,7 +918,6 @@ static int fs_enet_probe(struct platform
- const u32 *data;
- struct clk *clk;
- int err;
-- const u8 *mac_addr;
- const char *phy_connection_type;
- int privsize, len, ret = -ENODEV;
-
-@@ -1006,9 +1005,7 @@ static int fs_enet_probe(struct platform
- spin_lock_init(&fep->lock);
- spin_lock_init(&fep->tx_lock);
-
-- mac_addr = of_get_mac_address(ofdev->dev.of_node);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ndev->dev_addr, mac_addr);
-+ of_get_mac_address(ofdev->dev.of_node, ndev->dev_addr);
-
- ret = fep->ops->allocate_bd(ndev);
- if (ret)
---- a/drivers/net/ethernet/freescale/gianfar.c
-+++ b/drivers/net/ethernet/freescale/gianfar.c
-@@ -641,7 +641,6 @@ static phy_interface_t gfar_get_interfac
- static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
- {
- const char *model;
-- const void *mac_addr;
- int err = 0, i;
- phy_interface_t interface;
- struct net_device *dev = NULL;
-@@ -783,11 +782,8 @@ static int gfar_of_init(struct platform_
- if (stash_len || stash_idx)
- priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING;
-
-- mac_addr = of_get_mac_address(np);
--
-- if (!IS_ERR(mac_addr)) {
-- ether_addr_copy(dev->dev_addr, mac_addr);
-- } else {
-+ err = of_get_mac_address(np, dev->dev_addr);
-+ if (err) {
- eth_hw_addr_random(dev);
- dev_info(&ofdev->dev, "Using random MAC address: %pM\n", dev->dev_addr);
- }
---- a/drivers/net/ethernet/freescale/ucc_geth.c
-+++ b/drivers/net/ethernet/freescale/ucc_geth.c
-@@ -3696,7 +3696,6 @@ static int ucc_geth_probe(struct platfor
- int err, ucc_num, max_speed = 0;
- const unsigned int *prop;
- const char *sprop;
-- const void *mac_addr;
- phy_interface_t phy_interface;
- static const int enet_to_speed[] = {
- SPEED_10, SPEED_10, SPEED_10,
-@@ -3906,9 +3905,7 @@ static int ucc_geth_probe(struct platfor
- goto err_free_netdev;
- }
-
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(dev->dev_addr, mac_addr);
-+ of_get_mac_address(np, dev->dev_addr);
-
- ugeth->ug_info = ug_info;
- ugeth->dev = device;
---- a/drivers/net/ethernet/hisilicon/hisi_femac.c
-+++ b/drivers/net/ethernet/hisilicon/hisi_femac.c
-@@ -772,7 +772,6 @@ static int hisi_femac_drv_probe(struct p
- struct net_device *ndev;
- struct hisi_femac_priv *priv;
- struct phy_device *phy;
-- const char *mac_addr;
- int ret;
-
- ndev = alloc_etherdev(sizeof(*priv));
-@@ -842,10 +841,8 @@ static int hisi_femac_drv_probe(struct p
- (unsigned long)phy->phy_id,
- phy_modes(phy->interface));
-
-- mac_addr = of_get_mac_address(node);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ndev->dev_addr, mac_addr);
-- if (!is_valid_ether_addr(ndev->dev_addr)) {
-+ ret = of_get_mac_address(node, ndev->dev_addr);
-+ if (ret) {
- eth_hw_addr_random(ndev);
- dev_warn(dev, "using random MAC address %pM\n",
- ndev->dev_addr);
---- a/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c
-+++ b/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c
-@@ -1098,7 +1098,6 @@ static int hix5hd2_dev_probe(struct plat
- struct net_device *ndev;
- struct hix5hd2_priv *priv;
- struct mii_bus *bus;
-- const char *mac_addr;
- int ret;
-
- ndev = alloc_etherdev(sizeof(struct hix5hd2_priv));
-@@ -1220,10 +1219,8 @@ static int hix5hd2_dev_probe(struct plat
- goto out_phy_node;
- }
-
-- mac_addr = of_get_mac_address(node);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ndev->dev_addr, mac_addr);
-- if (!is_valid_ether_addr(ndev->dev_addr)) {
-+ ret = of_get_mac_address(node, ndev->dev_addr);
-+ if (ret) {
- eth_hw_addr_random(ndev);
- netdev_warn(ndev, "using random MAC address %pM\n",
- ndev->dev_addr);
---- a/drivers/net/ethernet/lantiq_xrx200.c
-+++ b/drivers/net/ethernet/lantiq_xrx200.c
-@@ -440,7 +440,6 @@ static int xrx200_probe(struct platform_
- struct resource *res;
- struct xrx200_priv *priv;
- struct net_device *net_dev;
-- const u8 *mac;
- int err;
-
- /* alloc the network device */
-@@ -484,10 +483,8 @@ static int xrx200_probe(struct platform_
- return PTR_ERR(priv->clk);
- }
-
-- mac = of_get_mac_address(np);
-- if (!IS_ERR(mac))
-- ether_addr_copy(net_dev->dev_addr, mac);
-- else
-+ err = of_get_mac_address(np, net_dev->dev_addr);
-+ if (err)
- eth_hw_addr_random(net_dev);
-
- /* bring up the dma engine and IP core */
---- a/drivers/net/ethernet/marvell/mv643xx_eth.c
-+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
-@@ -2701,7 +2701,6 @@ static int mv643xx_eth_shared_of_add_por
- struct platform_device *ppdev;
- struct mv643xx_eth_platform_data ppd;
- struct resource res;
-- const char *mac_addr;
- int ret;
- int dev_num = 0;
-
-@@ -2732,9 +2731,7 @@ static int mv643xx_eth_shared_of_add_por
- return -EINVAL;
- }
-
-- mac_addr = of_get_mac_address(pnp);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ppd.mac_addr, mac_addr);
-+ of_get_mac_address(pnp, ppd.mac_addr);
-
- mv643xx_eth_property(pnp, "tx-queue-size", ppd.tx_queue_size);
- mv643xx_eth_property(pnp, "tx-sram-addr", ppd.tx_sram_addr);
---- a/drivers/net/ethernet/marvell/mvneta.c
-+++ b/drivers/net/ethernet/marvell/mvneta.c
-@@ -5062,7 +5062,6 @@ static int mvneta_probe(struct platform_
- struct net_device *dev;
- struct phylink *phylink;
- struct phy *comphy;
-- const char *dt_mac_addr;
- char hw_mac_addr[ETH_ALEN];
- phy_interface_t phy_mode;
- const char *mac_from;
-@@ -5158,10 +5157,9 @@ static int mvneta_probe(struct platform_
- goto err_free_ports;
- }
-
-- dt_mac_addr = of_get_mac_address(dn);
-- if (!IS_ERR(dt_mac_addr)) {
-+ err = of_get_mac_address(dn, dev->dev_addr);
-+ if (!err) {
- mac_from = "device tree";
-- ether_addr_copy(dev->dev_addr, dt_mac_addr);
- } else {
- mvneta_get_mac_addr(pp, hw_mac_addr);
- if (is_valid_ether_addr(hw_mac_addr)) {
---- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
-+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c
-@@ -466,20 +466,17 @@ static int prestera_switch_set_base_mac_
- {
- struct device_node *base_mac_np;
- struct device_node *np;
-- const char *base_mac;
-+ int ret;
-
- np = of_find_compatible_node(NULL, NULL, "marvell,prestera");
- base_mac_np = of_parse_phandle(np, "base-mac-provider", 0);
-
-- base_mac = of_get_mac_address(base_mac_np);
-- of_node_put(base_mac_np);
-- if (!IS_ERR(base_mac))
-- ether_addr_copy(sw->base_mac, base_mac);
--
-- if (!is_valid_ether_addr(sw->base_mac)) {
-+ ret = of_get_mac_address(base_mac_np, sw->base_mac);
-+ if (ret) {
- eth_random_addr(sw->base_mac);
- dev_info(prestera_dev(sw), "using random base mac address\n");
- }
-+ of_node_put(base_mac_np);
-
- return prestera_hw_switch_mac_set(sw, sw->base_mac);
- }
---- a/drivers/net/ethernet/marvell/pxa168_eth.c
-+++ b/drivers/net/ethernet/marvell/pxa168_eth.c
-@@ -1392,7 +1392,6 @@ static int pxa168_eth_probe(struct platf
- struct resource *res;
- struct clk *clk;
- struct device_node *np;
-- const unsigned char *mac_addr = NULL;
- int err;
-
- printk(KERN_NOTICE "PXA168 10/100 Ethernet Driver\n");
-@@ -1435,12 +1434,8 @@ static int pxa168_eth_probe(struct platf
-
- INIT_WORK(&pep->tx_timeout_task, pxa168_eth_tx_timeout_task);
-
-- if (pdev->dev.of_node)
-- mac_addr = of_get_mac_address(pdev->dev.of_node);
--
-- if (!IS_ERR_OR_NULL(mac_addr)) {
-- ether_addr_copy(dev->dev_addr, mac_addr);
-- } else {
-+ err = of_get_mac_address(pdev->dev.of_node, dev->dev_addr);
-+ if (err) {
- /* try reading the mac address, if set by the bootloader */
- pxa168_eth_get_mac_address(dev, dev->dev_addr);
- if (!is_valid_ether_addr(dev->dev_addr)) {
---- a/drivers/net/ethernet/marvell/sky2.c
-+++ b/drivers/net/ethernet/marvell/sky2.c
-@@ -4725,7 +4725,7 @@ static struct net_device *sky2_init_netd
- {
- struct sky2_port *sky2;
- struct net_device *dev = alloc_etherdev(sizeof(*sky2));
-- const void *iap;
-+ int ret;
-
- if (!dev)
- return NULL;
-@@ -4795,10 +4795,8 @@ static struct net_device *sky2_init_netd
- * 1) from device tree data
- * 2) from internal registers set by bootloader
- */
-- iap = of_get_mac_address(hw->pdev->dev.of_node);
-- if (!IS_ERR(iap))
-- ether_addr_copy(dev->dev_addr, iap);
-- else
-+ ret = of_get_mac_address(hw->pdev->dev.of_node, dev->dev_addr);
-+ if (ret)
- memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
- ETH_ALEN);
-
---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -2604,14 +2604,11 @@ static int __init mtk_init(struct net_de
- {
- struct mtk_mac *mac = netdev_priv(dev);
- struct mtk_eth *eth = mac->hw;
-- const char *mac_addr;
-+ int ret;
-
-- mac_addr = of_get_mac_address(mac->of_node);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(dev->dev_addr, mac_addr);
--
-- /* If the mac address is invalid, use random mac address */
-- if (!is_valid_ether_addr(dev->dev_addr)) {
-+ ret = of_get_mac_address(mac->of_node, dev->dev_addr);
-+ if (ret) {
-+ /* If the mac address is invalid, use random mac address */
- eth_hw_addr_random(dev);
- dev_err(eth->dev, "generated random MAC address %pM\n",
- dev->dev_addr);
---- a/drivers/net/ethernet/micrel/ks8851_common.c
-+++ b/drivers/net/ethernet/micrel/ks8851_common.c
-@@ -194,11 +194,10 @@ static void ks8851_read_mac_addr(struct
- static void ks8851_init_mac(struct ks8851_net *ks, struct device_node *np)
- {
- struct net_device *dev = ks->netdev;
-- const u8 *mac_addr;
-+ int ret;
-
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr)) {
-- ether_addr_copy(dev->dev_addr, mac_addr);
-+ ret = of_get_mac_address(np, dev->dev_addr);
-+ if (!ret) {
- ks8851_write_mac_addr(dev);
- return;
- }
---- a/drivers/net/ethernet/microchip/lan743x_main.c
-+++ b/drivers/net/ethernet/microchip/lan743x_main.c
-@@ -2831,7 +2831,6 @@ static int lan743x_pcidev_probe(struct p
- {
- struct lan743x_adapter *adapter = NULL;
- struct net_device *netdev = NULL;
-- const void *mac_addr;
- int ret = -ENODEV;
-
- netdev = devm_alloc_etherdev(&pdev->dev,
-@@ -2848,9 +2847,7 @@ static int lan743x_pcidev_probe(struct p
- NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
- netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
-
-- mac_addr = of_get_mac_address(pdev->dev.of_node);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(adapter->mac_address, mac_addr);
-+ of_get_mac_address(pdev->dev.of_node, adapter->mac_address);
-
- ret = lan743x_pci_init(adapter, pdev);
- if (ret)
---- a/drivers/net/ethernet/nxp/lpc_eth.c
-+++ b/drivers/net/ethernet/nxp/lpc_eth.c
-@@ -1347,9 +1347,7 @@ static int lpc_eth_drv_probe(struct plat
- __lpc_get_mac(pldat, ndev->dev_addr);
-
- if (!is_valid_ether_addr(ndev->dev_addr)) {
-- const char *macaddr = of_get_mac_address(np);
-- if (!IS_ERR(macaddr))
-- ether_addr_copy(ndev->dev_addr, macaddr);
-+ of_get_mac_address(np, ndev->dev_addr);
- }
- if (!is_valid_ether_addr(ndev->dev_addr))
- eth_hw_addr_random(ndev);
---- a/drivers/net/ethernet/qualcomm/qca_spi.c
-+++ b/drivers/net/ethernet/qualcomm/qca_spi.c
-@@ -885,7 +885,7 @@ qca_spi_probe(struct spi_device *spi)
- struct net_device *qcaspi_devs = NULL;
- u8 legacy_mode = 0;
- u16 signature;
-- const char *mac;
-+ int ret;
-
- if (!spi->dev.of_node) {
- dev_err(&spi->dev, "Missing device tree\n");
-@@ -962,12 +962,8 @@ qca_spi_probe(struct spi_device *spi)
-
- spi_set_drvdata(spi, qcaspi_devs);
-
-- mac = of_get_mac_address(spi->dev.of_node);
--
-- if (!IS_ERR(mac))
-- ether_addr_copy(qca->net_dev->dev_addr, mac);
--
-- if (!is_valid_ether_addr(qca->net_dev->dev_addr)) {
-+ ret = of_get_mac_address(spi->dev.of_node, qca->net_dev->dev_addr);
-+ if (ret) {
- eth_hw_addr_random(qca->net_dev);
- dev_info(&spi->dev, "Using random MAC address: %pM\n",
- qca->net_dev->dev_addr);
---- a/drivers/net/ethernet/qualcomm/qca_uart.c
-+++ b/drivers/net/ethernet/qualcomm/qca_uart.c
-@@ -323,7 +323,6 @@ static int qca_uart_probe(struct serdev_
- {
- struct net_device *qcauart_dev = alloc_etherdev(sizeof(struct qcauart));
- struct qcauart *qca;
-- const char *mac;
- u32 speed = 115200;
- int ret;
-
-@@ -348,12 +347,8 @@ static int qca_uart_probe(struct serdev_
-
- of_property_read_u32(serdev->dev.of_node, "current-speed", &speed);
-
-- mac = of_get_mac_address(serdev->dev.of_node);
--
-- if (!IS_ERR(mac))
-- ether_addr_copy(qca->net_dev->dev_addr, mac);
--
-- if (!is_valid_ether_addr(qca->net_dev->dev_addr)) {
-+ ret = of_get_mac_address(serdev->dev.of_node, qca->net_dev->dev_addr);
-+ if (ret) {
- eth_hw_addr_random(qca->net_dev);
- dev_info(&serdev->dev, "Using random MAC address: %pM\n",
- qca->net_dev->dev_addr);
---- a/drivers/net/ethernet/renesas/ravb_main.c
-+++ b/drivers/net/ethernet/renesas/ravb_main.c
-@@ -109,11 +109,13 @@ static void ravb_set_buffer_align(struct
- * Ethernet AVB device doesn't have ROM for MAC address.
- * This function gets the MAC address that was used by a bootloader.
- */
--static void ravb_read_mac_address(struct net_device *ndev, const u8 *mac)
-+static void ravb_read_mac_address(struct device_node *np,
-+ struct net_device *ndev)
- {
-- if (!IS_ERR(mac)) {
-- ether_addr_copy(ndev->dev_addr, mac);
-- } else {
-+ int ret;
-+
-+ ret = of_get_mac_address(np, ndev->dev_addr);
-+ if (ret) {
- u32 mahr = ravb_read(ndev, MAHR);
- u32 malr = ravb_read(ndev, MALR);
-
-@@ -2189,7 +2191,7 @@ static int ravb_probe(struct platform_de
- priv->msg_enable = RAVB_DEF_MSG_ENABLE;
-
- /* Read and set MAC address */
-- ravb_read_mac_address(ndev, of_get_mac_address(np));
-+ ravb_read_mac_address(np, ndev);
- if (!is_valid_ether_addr(ndev->dev_addr)) {
- dev_warn(&pdev->dev,
- "no valid MAC address supplied, using a random one\n");
---- a/drivers/net/ethernet/renesas/sh_eth.c
-+++ b/drivers/net/ethernet/renesas/sh_eth.c
-@@ -3145,7 +3145,6 @@ static struct sh_eth_plat_data *sh_eth_p
- struct device_node *np = dev->of_node;
- struct sh_eth_plat_data *pdata;
- phy_interface_t interface;
-- const char *mac_addr;
- int ret;
-
- pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-@@ -3157,9 +3156,7 @@ static struct sh_eth_plat_data *sh_eth_p
- return NULL;
- pdata->phy_interface = interface;
-
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(pdata->mac_addr, mac_addr);
-+ of_get_mac_address(np, pdata->mac_addr);
-
- pdata->no_ether_link =
- of_property_read_bool(np, "renesas,no-ether-link");
---- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c
-+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c
-@@ -25,8 +25,7 @@
-
- #ifdef CONFIG_OF
- static int sxgbe_probe_config_dt(struct platform_device *pdev,
-- struct sxgbe_plat_data *plat,
-- const char **mac)
-+ struct sxgbe_plat_data *plat)
- {
- struct device_node *np = pdev->dev.of_node;
- struct sxgbe_dma_cfg *dma_cfg;
-@@ -35,7 +34,6 @@ static int sxgbe_probe_config_dt(struct
- if (!np)
- return -ENODEV;
-
-- *mac = of_get_mac_address(np);
- err = of_get_phy_mode(np, &plat->interface);
- if (err && err != -ENODEV)
- return err;
-@@ -63,8 +61,7 @@ static int sxgbe_probe_config_dt(struct
- }
- #else
- static int sxgbe_probe_config_dt(struct platform_device *pdev,
-- struct sxgbe_plat_data *plat,
-- const char **mac)
-+ struct sxgbe_plat_data *plat)
- {
- return -ENOSYS;
- }
-@@ -85,7 +82,6 @@ static int sxgbe_platform_probe(struct p
- void __iomem *addr;
- struct sxgbe_priv_data *priv = NULL;
- struct sxgbe_plat_data *plat_dat = NULL;
-- const char *mac = NULL;
- struct net_device *ndev = platform_get_drvdata(pdev);
- struct device_node *node = dev->of_node;
-
-@@ -101,7 +97,7 @@ static int sxgbe_platform_probe(struct p
- if (!plat_dat)
- return -ENOMEM;
-
-- ret = sxgbe_probe_config_dt(pdev, plat_dat, &mac);
-+ ret = sxgbe_probe_config_dt(pdev, plat_dat);
- if (ret) {
- pr_err("%s: main dt probe failed\n", __func__);
- return ret;
-@@ -122,8 +118,7 @@ static int sxgbe_platform_probe(struct p
- }
-
- /* Get MAC address if available (DT) */
-- if (!IS_ERR_OR_NULL(mac))
-- ether_addr_copy(priv->dev->dev_addr, mac);
-+ of_get_mac_address(node, priv->dev->dev_addr);
-
- /* Get the TX/RX IRQ numbers */
- for (i = 0, chan = 1; i < SXGBE_TX_QUEUES; i++) {
---- a/drivers/net/ethernet/socionext/sni_ave.c
-+++ b/drivers/net/ethernet/socionext/sni_ave.c
-@@ -1559,7 +1559,6 @@ static int ave_probe(struct platform_dev
- struct ave_private *priv;
- struct net_device *ndev;
- struct device_node *np;
-- const void *mac_addr;
- void __iomem *base;
- const char *name;
- int i, irq, ret;
-@@ -1600,12 +1599,9 @@ static int ave_probe(struct platform_dev
-
- ndev->max_mtu = AVE_MAX_ETHFRAME - (ETH_HLEN + ETH_FCS_LEN);
-
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ndev->dev_addr, mac_addr);
--
-- /* if the mac address is invalid, use random mac address */
-- if (!is_valid_ether_addr(ndev->dev_addr)) {
-+ ret = of_get_mac_address(np, ndev->dev_addr);
-+ if (ret) {
-+ /* if the mac address is invalid, use random mac address */
- eth_hw_addr_random(ndev);
- dev_warn(dev, "Using random MAC address: %pM\n",
- ndev->dev_addr);
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c
-@@ -115,7 +115,7 @@ static int anarion_dwmac_probe(struct pl
- if (IS_ERR(gmac))
- return PTR_ERR(gmac);
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
-@@ -445,7 +445,7 @@ static int dwc_eth_dwmac_probe(struct pl
- if (IS_ERR(stmmac_res.addr))
- return PTR_ERR(stmmac_res.addr);
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
-@@ -27,7 +27,7 @@ static int dwmac_generic_probe(struct pl
- return ret;
-
- if (pdev->dev.of_node) {
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat)) {
- dev_err(&pdev->dev, "dt configuration failed\n");
- return PTR_ERR(plat_dat);
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
-@@ -226,7 +226,7 @@ static int imx_dwmac_probe(struct platfo
- if (!dwmac)
- return -ENOMEM;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
-@@ -88,7 +88,7 @@ static int intel_eth_plat_probe(struct p
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat)) {
- dev_err(&pdev->dev, "dt configuration failed\n");
- return PTR_ERR(plat_dat);
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
-@@ -255,7 +255,7 @@ static int ipq806x_gmac_probe(struct pla
- if (val)
- return val;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c
-@@ -37,7 +37,7 @@ static int lpc18xx_dwmac_probe(struct pl
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
-@@ -407,7 +407,7 @@ static int mediatek_dwmac_probe(struct p
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
-@@ -52,7 +52,7 @@ static int meson6_dwmac_probe(struct pla
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
-@@ -370,7 +370,7 @@ static int meson8b_dwmac_probe(struct pl
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
-@@ -118,7 +118,7 @@ static int oxnas_dwmac_probe(struct plat
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
-@@ -461,7 +461,7 @@ static int qcom_ethqos_probe(struct plat
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat)) {
- dev_err(&pdev->dev, "dt configuration failed\n");
- return PTR_ERR(plat_dat);
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
-@@ -1392,7 +1392,7 @@ static int rk_gmac_probe(struct platform
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
-@@ -397,7 +397,7 @@ static int socfpga_dwmac_probe(struct pl
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
-@@ -325,7 +325,7 @@ static int sti_dwmac_probe(struct platfo
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
-@@ -371,7 +371,7 @@ static int stm32_dwmac_probe(struct plat
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
-@@ -1203,7 +1203,7 @@ static int sun8i_dwmac_probe(struct plat
- if (ret)
- return -EINVAL;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
-@@ -108,7 +108,7 @@ static int sun7i_gmac_probe(struct platf
- if (ret)
- return ret;
-
-- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
-+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
- if (IS_ERR(plat_dat))
- return PTR_ERR(plat_dat);
-
---- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
-+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
-@@ -25,7 +25,7 @@
-
- struct stmmac_resources {
- void __iomem *addr;
-- const char *mac;
-+ u8 mac[ETH_ALEN];
- int wol_irq;
- int lpi_irq;
- int irq;
---- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
-@@ -5008,7 +5008,7 @@ int stmmac_dvr_probe(struct device *devi
- priv->wol_irq = res->wol_irq;
- priv->lpi_irq = res->lpi_irq;
-
-- if (!IS_ERR_OR_NULL(res->mac))
-+ if (!is_zero_ether_addr(res->mac))
- memcpy(priv->dev->dev_addr, res->mac, ETH_ALEN);
-
- dev_set_drvdata(device, priv->dev);
---- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
-+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
-@@ -395,7 +395,7 @@ static int stmmac_of_get_mac_mode(struct
- * set some private fields that will be used by the main at runtime.
- */
- struct plat_stmmacenet_data *
--stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
-+stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
- {
- struct device_node *np = pdev->dev.of_node;
- struct plat_stmmacenet_data *plat;
-@@ -407,12 +407,12 @@ stmmac_probe_config_dt(struct platform_d
- if (!plat)
- return ERR_PTR(-ENOMEM);
-
-- *mac = of_get_mac_address(np);
-- if (IS_ERR(*mac)) {
-- if (PTR_ERR(*mac) == -EPROBE_DEFER)
-- return ERR_CAST(*mac);
-+ rc = of_get_mac_address(np, mac);
-+ if (rc) {
-+ if (rc == -EPROBE_DEFER)
-+ return ERR_PTR(rc);
-
-- *mac = NULL;
-+ eth_zero_addr(mac);
- }
-
- phy_mode = device_get_phy_mode(&pdev->dev);
-@@ -643,7 +643,7 @@ void stmmac_remove_config_dt(struct plat
- }
- #else
- struct plat_stmmacenet_data *
--stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
-+stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
- {
- return ERR_PTR(-EINVAL);
- }
---- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
-+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
-@@ -12,7 +12,7 @@
- #include "stmmac.h"
-
- struct plat_stmmacenet_data *
--stmmac_probe_config_dt(struct platform_device *pdev, const char **mac);
-+stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac);
- void stmmac_remove_config_dt(struct platform_device *pdev,
- struct plat_stmmacenet_data *plat);
-
---- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
-+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
-@@ -1742,7 +1742,6 @@ static int am65_cpsw_nuss_init_slave_por
-
- for_each_child_of_node(node, port_np) {
- struct am65_cpsw_port *port;
-- const void *mac_addr;
- u32 port_id;
-
- /* it is not a slave port node, continue */
-@@ -1821,15 +1820,15 @@ static int am65_cpsw_nuss_init_slave_por
- return ret;
- }
-
-- mac_addr = of_get_mac_address(port_np);
-- if (!IS_ERR(mac_addr)) {
-- ether_addr_copy(port->slave.mac_addr, mac_addr);
-- } else if (am65_cpsw_am654_get_efuse_macid(port_np,
-- port->port_id,
-- port->slave.mac_addr) ||
-- !is_valid_ether_addr(port->slave.mac_addr)) {
-- random_ether_addr(port->slave.mac_addr);
-- dev_err(dev, "Use random MAC address\n");
-+ ret = of_get_mac_address(port_np, port->slave.mac_addr);
-+ if (ret) {
-+ am65_cpsw_am654_get_efuse_macid(port_np,
-+ port->port_id,
-+ port->slave.mac_addr);
-+ if (!is_valid_ether_addr(port->slave.mac_addr)) {
-+ random_ether_addr(port->slave.mac_addr);
-+ dev_err(dev, "Use random MAC address\n");
-+ }
- }
- }
- of_node_put(node);
---- a/drivers/net/ethernet/ti/cpsw.c
-+++ b/drivers/net/ethernet/ti/cpsw.c
-@@ -1308,7 +1308,6 @@ static int cpsw_probe_dt(struct cpsw_pla
-
- for_each_available_child_of_node(node, slave_node) {
- struct cpsw_slave_data *slave_data = data->slave_data + i;
-- const void *mac_addr = NULL;
- int lenp;
- const __be32 *parp;
-
-@@ -1380,10 +1379,8 @@ static int cpsw_probe_dt(struct cpsw_pla
- }
-
- no_phy_slave:
-- mac_addr = of_get_mac_address(slave_node);
-- if (!IS_ERR(mac_addr)) {
-- ether_addr_copy(slave_data->mac_addr, mac_addr);
-- } else {
-+ ret = of_get_mac_address(slave_node, slave_data->mac_addr);
-+ if (ret) {
- ret = ti_cm_get_macid(&pdev->dev, i,
- slave_data->mac_addr);
- if (ret)
---- a/drivers/net/ethernet/ti/cpsw_new.c
-+++ b/drivers/net/ethernet/ti/cpsw_new.c
-@@ -1269,7 +1269,6 @@ static int cpsw_probe_dt(struct cpsw_com
-
- for_each_child_of_node(tmp_node, port_np) {
- struct cpsw_slave_data *slave_data;
-- const void *mac_addr;
- u32 port_id;
-
- ret = of_property_read_u32(port_np, "reg", &port_id);
-@@ -1328,10 +1327,8 @@ static int cpsw_probe_dt(struct cpsw_com
- goto err_node_put;
- }
-
-- mac_addr = of_get_mac_address(port_np);
-- if (!IS_ERR(mac_addr)) {
-- ether_addr_copy(slave_data->mac_addr, mac_addr);
-- } else {
-+ ret = of_get_mac_address(port_np, slave_data->mac_addr);
-+ if (ret) {
- ret = ti_cm_get_macid(dev, port_id - 1,
- slave_data->mac_addr);
- if (ret)
---- a/drivers/net/ethernet/ti/davinci_emac.c
-+++ b/drivers/net/ethernet/ti/davinci_emac.c
-@@ -1699,7 +1699,6 @@ davinci_emac_of_get_pdata(struct platfor
- const struct of_device_id *match;
- const struct emac_platform_data *auxdata;
- struct emac_platform_data *pdata = NULL;
-- const u8 *mac_addr;
-
- if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
- return dev_get_platdata(&pdev->dev);
-@@ -1711,11 +1710,8 @@ davinci_emac_of_get_pdata(struct platfor
- np = pdev->dev.of_node;
- pdata->version = EMAC_VERSION_2;
-
-- if (!is_valid_ether_addr(pdata->mac_addr)) {
-- mac_addr = of_get_mac_address(np);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(pdata->mac_addr, mac_addr);
-- }
-+ if (!is_valid_ether_addr(pdata->mac_addr))
-+ of_get_mac_address(np, pdata->mac_addr);
-
- of_property_read_u32(np, "ti,davinci-ctrl-reg-offset",
- &pdata->ctrl_reg_offset);
---- a/drivers/net/ethernet/ti/netcp_core.c
-+++ b/drivers/net/ethernet/ti/netcp_core.c
-@@ -1966,7 +1966,6 @@ static int netcp_create_interface(struct
- struct resource res;
- void __iomem *efuse = NULL;
- u32 efuse_mac = 0;
-- const void *mac_addr;
- u8 efuse_mac_addr[6];
- u32 temp[2];
- int ret = 0;
-@@ -2036,10 +2035,8 @@ static int netcp_create_interface(struct
- devm_iounmap(dev, efuse);
- devm_release_mem_region(dev, res.start, size);
- } else {
-- mac_addr = of_get_mac_address(node_interface);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(ndev->dev_addr, mac_addr);
-- else
-+ ret = of_get_mac_address(node_interface, ndev->dev_addr);
-+ if (ret)
- eth_random_addr(ndev->dev_addr);
- }
-
---- a/drivers/net/ethernet/wiznet/w5100-spi.c
-+++ b/drivers/net/ethernet/wiznet/w5100-spi.c
-@@ -423,8 +423,14 @@ static int w5100_spi_probe(struct spi_de
- const struct of_device_id *of_id;
- const struct w5100_ops *ops;
- kernel_ulong_t driver_data;
-+ const void *mac = NULL;
-+ u8 tmpmac[ETH_ALEN];
- int priv_size;
-- const void *mac = of_get_mac_address(spi->dev.of_node);
-+ int ret;
-+
-+ ret = of_get_mac_address(spi->dev.of_node, tmpmac);
-+ if (!ret)
-+ mac = tmpmac;
-
- if (spi->dev.of_node) {
- of_id = of_match_device(w5100_of_match, &spi->dev);
---- a/drivers/net/ethernet/wiznet/w5100.c
-+++ b/drivers/net/ethernet/wiznet/w5100.c
-@@ -1159,7 +1159,7 @@ int w5100_probe(struct device *dev, cons
- INIT_WORK(&priv->setrx_work, w5100_setrx_work);
- INIT_WORK(&priv->restart_work, w5100_restart_work);
-
-- if (!IS_ERR_OR_NULL(mac_addr))
-+ if (mac_addr)
- memcpy(ndev->dev_addr, mac_addr, ETH_ALEN);
- else
- eth_hw_addr_random(ndev);
---- a/drivers/net/ethernet/xilinx/ll_temac_main.c
-+++ b/drivers/net/ethernet/xilinx/ll_temac_main.c
-@@ -438,7 +438,7 @@ static void temac_do_set_mac_address(str
-
- static int temac_init_mac_address(struct net_device *ndev, const void *address)
- {
-- ether_addr_copy(ndev->dev_addr, address);
-+ memcpy(ndev->dev_addr, address, ETH_ALEN);
- if (!is_valid_ether_addr(ndev->dev_addr))
- eth_hw_addr_random(ndev);
- temac_do_set_mac_address(ndev);
-@@ -1370,7 +1370,7 @@ static int temac_probe(struct platform_d
- struct device_node *temac_np = dev_of_node(&pdev->dev), *dma_np;
- struct temac_local *lp;
- struct net_device *ndev;
-- const void *addr;
-+ u8 addr[ETH_ALEN];
- __be32 *p;
- bool little_endian;
- int rc = 0;
-@@ -1563,8 +1563,8 @@ static int temac_probe(struct platform_d
-
- if (temac_np) {
- /* Retrieve the MAC address */
-- addr = of_get_mac_address(temac_np);
-- if (IS_ERR(addr)) {
-+ rc = of_get_mac_address(temac_np, addr);
-+ if (rc) {
- dev_err(&pdev->dev, "could not find MAC address\n");
- return -ENODEV;
- }
---- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
-+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
-@@ -1843,8 +1843,8 @@ static int axienet_probe(struct platform
- struct device_node *np;
- struct axienet_local *lp;
- struct net_device *ndev;
-- const void *mac_addr;
- struct resource *ethres;
-+ u8 mac_addr[ETH_ALEN];
- int addr_width = 32;
- u32 value;
-
-@@ -2044,13 +2044,14 @@ static int axienet_probe(struct platform
- dev_info(&pdev->dev, "Ethernet core IRQ not defined\n");
-
- /* Retrieve the MAC address */
-- mac_addr = of_get_mac_address(pdev->dev.of_node);
-- if (IS_ERR(mac_addr)) {
-- dev_warn(&pdev->dev, "could not find MAC address property: %ld\n",
-- PTR_ERR(mac_addr));
-- mac_addr = NULL;
-+ ret = of_get_mac_address(pdev->dev.of_node, mac_addr);
-+ if (!ret) {
-+ axienet_set_mac_address(ndev, mac_addr);
-+ } else {
-+ dev_warn(&pdev->dev, "could not find MAC address property: %d\n",
-+ ret);
-+ axienet_set_mac_address(ndev, NULL);
- }
-- axienet_set_mac_address(ndev, mac_addr);
-
- lp->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD;
- lp->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD;
---- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c
-+++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
-@@ -1107,7 +1107,6 @@ static int xemaclite_of_probe(struct pla
- struct net_device *ndev = NULL;
- struct net_local *lp = NULL;
- struct device *dev = &ofdev->dev;
-- const void *mac_address;
-
- int rc = 0;
-
-@@ -1149,12 +1148,9 @@ static int xemaclite_of_probe(struct pla
- lp->next_rx_buf_to_use = 0x0;
- lp->tx_ping_pong = get_bool(ofdev, "xlnx,tx-ping-pong");
- lp->rx_ping_pong = get_bool(ofdev, "xlnx,rx-ping-pong");
-- mac_address = of_get_mac_address(ofdev->dev.of_node);
-
-- if (!IS_ERR(mac_address)) {
-- /* Set the MAC address. */
-- ether_addr_copy(ndev->dev_addr, mac_address);
-- } else {
-+ rc = of_get_mac_address(ofdev->dev.of_node, ndev->dev_addr);
-+ if (rc) {
- dev_warn(dev, "No MAC address found, using random\n");
- eth_hw_addr_random(ndev);
- }
---- a/drivers/net/wireless/ath/ath9k/init.c
-+++ b/drivers/net/wireless/ath/ath9k/init.c
-@@ -618,7 +618,6 @@ static int ath9k_of_init(struct ath_soft
- struct ath_hw *ah = sc->sc_ah;
- struct ath_common *common = ath9k_hw_common(ah);
- enum ath_bus_type bus_type = common->bus_ops->ath_bus_type;
-- const char *mac;
- char eeprom_name[100];
- int ret;
-
-@@ -641,9 +640,7 @@ static int ath9k_of_init(struct ath_soft
- ah->ah_flags |= AH_NO_EEP_SWAP;
- }
-
-- mac = of_get_mac_address(np);
-- if (!IS_ERR(mac))
-- ether_addr_copy(common->macaddr, mac);
-+ of_get_mac_address(np, common->macaddr);
-
- return 0;
- }
---- a/drivers/net/wireless/mediatek/mt76/eeprom.c
-+++ b/drivers/net/wireless/mediatek/mt76/eeprom.c
-@@ -90,15 +90,9 @@ out_put_node:
- void
- mt76_eeprom_override(struct mt76_dev *dev)
- {
--#ifdef CONFIG_OF
- struct device_node *np = dev->dev->of_node;
-- const u8 *mac = NULL;
-
-- if (np)
-- mac = of_get_mac_address(np);
-- if (!IS_ERR_OR_NULL(mac))
-- ether_addr_copy(dev->macaddr, mac);
--#endif
-+ of_get_mac_address(np, dev->macaddr);
-
- if (!is_valid_ether_addr(dev->macaddr)) {
- eth_random_addr(dev->macaddr);
---- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
-+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
-@@ -990,11 +990,7 @@ static void rt2x00lib_rate(struct ieee80
-
- void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr)
- {
-- const char *mac_addr;
--
-- mac_addr = of_get_mac_address(rt2x00dev->dev->of_node);
-- if (!IS_ERR(mac_addr))
-- ether_addr_copy(eeprom_mac_addr, mac_addr);
-+ of_get_mac_address(rt2x00dev->dev->of_node, eeprom_mac_addr);
-
- if (!is_valid_ether_addr(eeprom_mac_addr)) {
- eth_random_addr(eeprom_mac_addr);
---- a/drivers/of/of_net.c
-+++ b/drivers/of/of_net.c
-@@ -45,37 +45,29 @@ int of_get_phy_mode(struct device_node *
- }
- EXPORT_SYMBOL_GPL(of_get_phy_mode);
-
--static const void *of_get_mac_addr(struct device_node *np, const char *name)
-+static int of_get_mac_addr(struct device_node *np, const char *name, u8 *addr)
- {
- struct property *pp = of_find_property(np, name, NULL);
-
-- if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value))
-- return pp->value;
-- return NULL;
-+ if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value)) {
-+ memcpy(addr, pp->value, ETH_ALEN);
-+ return 0;
-+ }
-+ return -ENODEV;
- }
-
--static const void *of_get_mac_addr_nvmem(struct device_node *np)
-+static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr)
- {
-- int ret;
-- const void *mac;
-- u8 nvmem_mac[ETH_ALEN];
- struct platform_device *pdev = of_find_device_by_node(np);
-+ int ret;
-
- if (!pdev)
-- return ERR_PTR(-ENODEV);
-+ return -ENODEV;
-
-- ret = nvmem_get_mac_address(&pdev->dev, &nvmem_mac);
-- if (ret) {
-- put_device(&pdev->dev);
-- return ERR_PTR(ret);
-- }
--
-- mac = devm_kmemdup(&pdev->dev, nvmem_mac, ETH_ALEN, GFP_KERNEL);
-+ ret = nvmem_get_mac_address(&pdev->dev, addr);
- put_device(&pdev->dev);
-- if (!mac)
-- return ERR_PTR(-ENOMEM);
-
-- return mac;
-+ return ret;
- }
-
- /**
-@@ -98,24 +90,27 @@ static const void *of_get_mac_addr_nvmem
- * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
- * but is all zeros.
- *
-- * Return: Will be a valid pointer on success and ERR_PTR in case of error.
-+ * Return: 0 on success and errno in case of error.
- */
--const void *of_get_mac_address(struct device_node *np)
-+int of_get_mac_address(struct device_node *np, u8 *addr)
- {
-- const void *addr;
--
-- addr = of_get_mac_addr(np, "mac-address");
-- if (addr)
-- return addr;
-+ int ret;
-
-- addr = of_get_mac_addr(np, "local-mac-address");
-- if (addr)
-- return addr;
-+ if (!np)
-+ return -ENODEV;
-
-- addr = of_get_mac_addr(np, "address");
-- if (addr)
-- return addr;
-+ ret = of_get_mac_addr(np, "mac-address", addr);
-+ if (!ret)
-+ return 0;
-+
-+ ret = of_get_mac_addr(np, "local-mac-address", addr);
-+ if (!ret)
-+ return 0;
-+
-+ ret = of_get_mac_addr(np, "address", addr);
-+ if (!ret)
-+ return 0;
-
-- return of_get_mac_addr_nvmem(np);
-+ return of_get_mac_addr_nvmem(np, addr);
- }
- EXPORT_SYMBOL(of_get_mac_address);
---- a/drivers/staging/octeon/ethernet.c
-+++ b/drivers/staging/octeon/ethernet.c
-@@ -407,14 +407,10 @@ static int cvm_oct_common_set_mac_addres
- int cvm_oct_common_init(struct net_device *dev)
- {
- struct octeon_ethernet *priv = netdev_priv(dev);
-- const u8 *mac = NULL;
-+ int ret;
-
-- if (priv->of_node)
-- mac = of_get_mac_address(priv->of_node);
--
-- if (!IS_ERR_OR_NULL(mac))
-- ether_addr_copy(dev->dev_addr, mac);
-- else
-+ ret = of_get_mac_address(priv->of_node, dev->dev_addr);
-+ if (ret)
- eth_hw_addr_random(dev);
-
- /*
---- a/drivers/staging/wfx/main.c
-+++ b/drivers/staging/wfx/main.c
-@@ -339,7 +339,6 @@ int wfx_probe(struct wfx_dev *wdev)
- {
- int i;
- int err;
-- const void *macaddr;
- struct gpio_desc *gpio_saved;
-
- // During first part of boot, gpio_wakeup cannot yet been used. So
-@@ -428,9 +427,9 @@ int wfx_probe(struct wfx_dev *wdev)
-
- for (i = 0; i < ARRAY_SIZE(wdev->addresses); i++) {
- eth_zero_addr(wdev->addresses[i].addr);
-- macaddr = of_get_mac_address(wdev->dev->of_node);
-- if (!IS_ERR_OR_NULL(macaddr)) {
-- ether_addr_copy(wdev->addresses[i].addr, macaddr);
-+ err = of_get_mac_address(wdev->dev->of_node,
-+ wdev->addresses[i].addr);
-+ if (!err) {
- wdev->addresses[i].addr[ETH_ALEN - 1] += i;
- } else {
- ether_addr_copy(wdev->addresses[i].addr,
---- a/include/linux/of_net.h
-+++ b/include/linux/of_net.h
-@@ -13,7 +13,7 @@
-
- struct net_device;
- extern int of_get_phy_mode(struct device_node *np, phy_interface_t *interface);
--extern const void *of_get_mac_address(struct device_node *np);
-+extern int of_get_mac_address(struct device_node *np, u8 *mac);
- extern struct net_device *of_find_net_device_by_node(struct device_node *np);
- #else
- static inline int of_get_phy_mode(struct device_node *np,
-@@ -22,9 +22,9 @@ static inline int of_get_phy_mode(struct
- return -ENODEV;
- }
-
--static inline const void *of_get_mac_address(struct device_node *np)
-+static inline int of_get_mac_address(struct device_node *np, u8 *mac)
- {
-- return ERR_PTR(-ENODEV);
-+ return -ENODEV;
- }
-
- static inline struct net_device *of_find_net_device_by_node(struct device_node *np)
---- a/include/net/dsa.h
-+++ b/include/net/dsa.h
-@@ -208,7 +208,7 @@ struct dsa_port {
- unsigned int index;
- const char *name;
- struct dsa_port *cpu_dp;
-- const char *mac;
-+ u8 mac[ETH_ALEN];
- struct device_node *dn;
- unsigned int ageing_time;
- bool vlan_filtering;
---- a/net/dsa/dsa2.c
-+++ b/net/dsa/dsa2.c
-@@ -288,7 +288,7 @@ static int dsa_port_setup(struct dsa_por
-
- break;
- case DSA_PORT_TYPE_USER:
-- dp->mac = of_get_mac_address(dp->dn);
-+ of_get_mac_address(dp->dn, dp->mac);
- err = dsa_slave_create(dp);
- if (err)
- break;
---- a/net/dsa/slave.c
-+++ b/net/dsa/slave.c
-@@ -1855,7 +1855,7 @@ int dsa_slave_create(struct dsa_port *po
- slave_dev->hw_features |= NETIF_F_HW_TC;
- slave_dev->features |= NETIF_F_LLTX;
- slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
-- if (!IS_ERR_OR_NULL(port->mac))
-+ if (!is_zero_ether_addr(port->mac))
- ether_addr_copy(slave_dev->dev_addr, port->mac);
- else
- eth_hw_addr_inherit(slave_dev, master);
---- a/net/ethernet/eth.c
-+++ b/net/ethernet/eth.c
-@@ -506,13 +506,14 @@ unsigned char * __weak arch_get_platform
-
- int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr)
- {
-- const unsigned char *addr = NULL;
-+ unsigned char *addr;
-+ int ret;
-
-- if (dev->of_node)
-- addr = of_get_mac_address(dev->of_node);
-- if (IS_ERR_OR_NULL(addr))
-- addr = arch_get_platform_mac_address();
-+ ret = of_get_mac_address(dev->of_node, mac_addr);
-+ if (!ret)
-+ return 0;
-
-+ addr = arch_get_platform_mac_address();
- if (!addr)
- return -ENODEV;
-
+++ /dev/null
-From f10843e04a075202dbb39dfcee047e3a2fdf5a8d Mon Sep 17 00:00:00 2001
-From: Michael Walle <michael@walle.cc>
-Date: Mon, 12 Apr 2021 19:47:18 +0200
-Subject: of: net: fix of_get_mac_addr_nvmem() for non-platform devices
-
-of_get_mac_address() already supports fetching the MAC address by an
-nvmem provider. But until now, it was just working for platform devices.
-Esp. it was not working for DSA ports and PCI devices. It gets more
-common that PCI devices have a device tree binding since SoCs contain
-integrated root complexes.
-
-Use the nvmem of_* binding to fetch the nvmem cells by a struct
-device_node. We still have to try to read the cell by device first
-because there might be a nvmem_cell_lookup associated with that device.
-
-Signed-off-by: Michael Walle <michael@walle.cc>
-Reviewed-by: Andrew Lunn <andrew@lunn.ch>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- drivers/of/of_net.c | 35 ++++++++++++++++++++++++++++++-----
- 1 file changed, 30 insertions(+), 5 deletions(-)
-
---- a/drivers/of/of_net.c
-+++ b/drivers/of/of_net.c
-@@ -11,6 +11,7 @@
- #include <linux/phy.h>
- #include <linux/export.h>
- #include <linux/device.h>
-+#include <linux/nvmem-consumer.h>
-
- /**
- * of_get_phy_mode - Get phy mode for given device_node
-@@ -59,15 +60,39 @@ static int of_get_mac_addr(struct device
- static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr)
- {
- struct platform_device *pdev = of_find_device_by_node(np);
-+ struct nvmem_cell *cell;
-+ const void *mac;
-+ size_t len;
- int ret;
-
-- if (!pdev)
-- return -ENODEV;
-+ /* Try lookup by device first, there might be a nvmem_cell_lookup
-+ * associated with a given device.
-+ */
-+ if (pdev) {
-+ ret = nvmem_get_mac_address(&pdev->dev, addr);
-+ put_device(&pdev->dev);
-+ return ret;
-+ }
-+
-+ cell = of_nvmem_cell_get(np, "mac-address");
-+ if (IS_ERR(cell))
-+ return PTR_ERR(cell);
-+
-+ mac = nvmem_cell_read(cell, &len);
-+ nvmem_cell_put(cell);
-+
-+ if (IS_ERR(mac))
-+ return PTR_ERR(mac);
-+
-+ if (len != ETH_ALEN || !is_valid_ether_addr(mac)) {
-+ kfree(mac);
-+ return -EINVAL;
-+ }
-
-- ret = nvmem_get_mac_address(&pdev->dev, addr);
-- put_device(&pdev->dev);
-+ memcpy(addr, mac, ETH_ALEN);
-+ kfree(mac);
-
-- return ret;
-+ return 0;
- }
-
- /**
--- /dev/null
+From 3637d49e11219512920aca8b8ccd0994be33fa8b Mon Sep 17 00:00:00 2001
+From: Lee Jones <lee.jones@linaro.org>
+Date: Thu, 18 Mar 2021 10:40:30 +0000
+Subject: [PATCH] of: base: Fix some formatting issues and provide missing
+ descriptions
+
+Fixes the following W=1 kernel build warning(s):
+
+ drivers/of/base.c:315: warning: Function parameter or member 'cpun' not described in '__of_find_n_match_cpu_property'
+ drivers/of/base.c:315: warning: Function parameter or member 'prop_name' not described in '__of_find_n_match_cpu_property'
+ drivers/of/base.c:315: warning: Function parameter or member 'cpu' not described in '__of_find_n_match_cpu_property'
+ drivers/of/base.c:315: warning: Function parameter or member 'thread' not described in '__of_find_n_match_cpu_property'
+ drivers/of/base.c:315: warning: expecting prototype for property holds the physical id of the(). Prototype was for __of_find_n_match_cpu_property() instead
+ drivers/of/base.c:1139: warning: Function parameter or member 'match' not described in 'of_find_matching_node_and_match'
+ drivers/of/base.c:1779: warning: Function parameter or member 'np' not described in '__of_add_property'
+ drivers/of/base.c:1779: warning: Function parameter or member 'prop' not described in '__of_add_property'
+ drivers/of/base.c:1800: warning: Function parameter or member 'np' not described in 'of_add_property'
+ drivers/of/base.c:1800: warning: Function parameter or member 'prop' not described in 'of_add_property'
+ drivers/of/base.c:1849: warning: Function parameter or member 'np' not described in 'of_remove_property'
+ drivers/of/base.c:1849: warning: Function parameter or member 'prop' not described in 'of_remove_property'
+ drivers/of/base.c:2137: warning: Function parameter or member 'dn' not described in 'of_console_check'
+ drivers/of/base.c:2137: warning: Function parameter or member 'name' not described in 'of_console_check'
+ drivers/of/base.c:2137: warning: Function parameter or member 'index' not described in 'of_console_check'
+
+Cc: Rob Herring <robh+dt@kernel.org>
+Cc: Frank Rowand <frowand.list@gmail.com>
+Cc: "David S. Miller" <davem@davemloft.net>
+Cc: devicetree@vger.kernel.org
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+Signed-off-by: Rob Herring <robh@kernel.org>
+Link: https://lore.kernel.org/r/20210318104036.3175910-5-lee.jones@linaro.org
+---
+ drivers/of/base.c | 16 +++++++++++-----
+ 1 file changed, 11 insertions(+), 5 deletions(-)
+
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -305,7 +305,7 @@ bool __weak arch_match_cpu_phys_id(int c
+ return (u32)phys_id == cpu;
+ }
+
+-/**
++/*
+ * Checks if the given "prop_name" property holds the physical id of the
+ * core/thread corresponding to the logical cpu 'cpu'. If 'thread' is not
+ * NULL, local thread number within the core is returned in it.
+@@ -1128,7 +1128,7 @@ EXPORT_SYMBOL(of_match_node);
+ * will; typically, you pass what the previous call
+ * returned. of_node_put() will be called on it
+ * @matches: array of of device match structures to search in
+- * @match Updated to point at the matches entry which matched
++ * @match: Updated to point at the matches entry which matched
+ *
+ * Returns a node pointer with refcount incremented, use
+ * of_node_put() on it when done.
+@@ -1779,6 +1779,8 @@ EXPORT_SYMBOL(of_count_phandle_with_args
+
+ /**
+ * __of_add_property - Add a property to a node without lock operations
++ * @np: Caller's Device Node
++ * @prob: Property to add
+ */
+ int __of_add_property(struct device_node *np, struct property *prop)
+ {
+@@ -1800,6 +1802,8 @@ int __of_add_property(struct device_node
+
+ /**
+ * of_add_property - Add a property to a node
++ * @np: Caller's Device Node
++ * @prob: Property to add
+ */
+ int of_add_property(struct device_node *np, struct property *prop)
+ {
+@@ -1844,6 +1848,8 @@ int __of_remove_property(struct device_n
+
+ /**
+ * of_remove_property - Remove a property from a node.
++ * @np: Caller's Device Node
++ * @prob: Property to remove
+ *
+ * Note that we don't actually remove it, since we have given out
+ * who-knows-how-many pointers to the data using get-property.
+@@ -2130,9 +2136,9 @@ EXPORT_SYMBOL_GPL(of_alias_get_highest_i
+
+ /**
+ * of_console_check() - Test and setup console for DT setup
+- * @dn - Pointer to device node
+- * @name - Name to use for preferred console without index. ex. "ttyS"
+- * @index - Index to use for preferred console.
++ * @dn: Pointer to device node
++ * @name: Name to use for preferred console without index. ex. "ttyS"
++ * @index: Index to use for preferred console.
+ *
+ * Check if the given device node matches the stdout-path property in the
+ * /chosen node. If it does then register it as the preferred console and return
--- /dev/null
+From 62f026f082e4d762a47b43ea693b38f025122332 Mon Sep 17 00:00:00 2001
+From: Rob Herring <robh@kernel.org>
+Date: Fri, 26 Mar 2021 13:26:06 -0600
+Subject: [PATCH] of: Fix kerneldoc output formatting
+
+The indentation of the kerneldoc comments affects the output formatting.
+Leading tabs in particular don't work, sections need to be indented
+under the section header, and several code blocks are reformatted.
+
+Cc: Frank Rowand <frowand.list@gmail.com>
+Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
+Signed-off-by: Rob Herring <robh@kernel.org>
+Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+Link: https://lore.kernel.org/r/20210326192606.3702739-1-robh@kernel.org
+---
+ drivers/of/base.c | 275 +++++++++++++++++++++++-----------------------
+ drivers/of/fdt.c | 9 +-
+ 2 files changed, 141 insertions(+), 143 deletions(-)
+
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -651,11 +651,11 @@ bool of_device_is_big_endian(const struc
+ EXPORT_SYMBOL(of_device_is_big_endian);
+
+ /**
+- * of_get_parent - Get a node's parent if any
+- * @node: Node to get parent
++ * of_get_parent - Get a node's parent if any
++ * @node: Node to get parent
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done.
+ */
+ struct device_node *of_get_parent(const struct device_node *node)
+ {
+@@ -673,15 +673,15 @@ struct device_node *of_get_parent(const
+ EXPORT_SYMBOL(of_get_parent);
+
+ /**
+- * of_get_next_parent - Iterate to a node's parent
+- * @node: Node to get parent of
++ * of_get_next_parent - Iterate to a node's parent
++ * @node: Node to get parent of
+ *
+- * This is like of_get_parent() except that it drops the
+- * refcount on the passed node, making it suitable for iterating
+- * through a node's parents.
++ * This is like of_get_parent() except that it drops the
++ * refcount on the passed node, making it suitable for iterating
++ * through a node's parents.
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done.
+ */
+ struct device_node *of_get_next_parent(struct device_node *node)
+ {
+@@ -719,13 +719,13 @@ static struct device_node *__of_get_next
+ child = __of_get_next_child(parent, child))
+
+ /**
+- * of_get_next_child - Iterate a node childs
+- * @node: parent node
+- * @prev: previous child of the parent node, or NULL to get first
+- *
+- * Returns a node pointer with refcount incremented, use of_node_put() on
+- * it when done. Returns NULL when prev is the last child. Decrements the
+- * refcount of prev.
++ * of_get_next_child - Iterate a node childs
++ * @node: parent node
++ * @prev: previous child of the parent node, or NULL to get first
++ *
++ * Return: A node pointer with refcount incremented, use of_node_put() on
++ * it when done. Returns NULL when prev is the last child. Decrements the
++ * refcount of prev.
+ */
+ struct device_node *of_get_next_child(const struct device_node *node,
+ struct device_node *prev)
+@@ -741,12 +741,12 @@ struct device_node *of_get_next_child(co
+ EXPORT_SYMBOL(of_get_next_child);
+
+ /**
+- * of_get_next_available_child - Find the next available child node
+- * @node: parent node
+- * @prev: previous child of the parent node, or NULL to get first
++ * of_get_next_available_child - Find the next available child node
++ * @node: parent node
++ * @prev: previous child of the parent node, or NULL to get first
+ *
+- * This function is like of_get_next_child(), except that it
+- * automatically skips any disabled nodes (i.e. status = "disabled").
++ * This function is like of_get_next_child(), except that it
++ * automatically skips any disabled nodes (i.e. status = "disabled").
+ */
+ struct device_node *of_get_next_available_child(const struct device_node *node,
+ struct device_node *prev)
+@@ -772,12 +772,12 @@ struct device_node *of_get_next_availabl
+ EXPORT_SYMBOL(of_get_next_available_child);
+
+ /**
+- * of_get_next_cpu_node - Iterate on cpu nodes
+- * @prev: previous child of the /cpus node, or NULL to get first
++ * of_get_next_cpu_node - Iterate on cpu nodes
++ * @prev: previous child of the /cpus node, or NULL to get first
+ *
+- * Returns a cpu node pointer with refcount incremented, use of_node_put()
+- * on it when done. Returns NULL when prev is the last child. Decrements
+- * the refcount of prev.
++ * Return: A cpu node pointer with refcount incremented, use of_node_put()
++ * on it when done. Returns NULL when prev is the last child. Decrements
++ * the refcount of prev.
+ */
+ struct device_node *of_get_next_cpu_node(struct device_node *prev)
+ {
+@@ -834,15 +834,15 @@ struct device_node *of_get_compatible_ch
+ EXPORT_SYMBOL(of_get_compatible_child);
+
+ /**
+- * of_get_child_by_name - Find the child node by name for a given parent
+- * @node: parent node
+- * @name: child name to look for.
+- *
+- * This function looks for child node for given matching name
+- *
+- * Returns a node pointer if found, with refcount incremented, use
+- * of_node_put() on it when done.
+- * Returns NULL if node is not found.
++ * of_get_child_by_name - Find the child node by name for a given parent
++ * @node: parent node
++ * @name: child name to look for.
++ *
++ * This function looks for child node for given matching name
++ *
++ * Return: A node pointer if found, with refcount incremented, use
++ * of_node_put() on it when done.
++ * Returns NULL if node is not found.
+ */
+ struct device_node *of_get_child_by_name(const struct device_node *node,
+ const char *name)
+@@ -893,22 +893,22 @@ struct device_node *__of_find_node_by_fu
+ }
+
+ /**
+- * of_find_node_opts_by_path - Find a node matching a full OF path
+- * @path: Either the full path to match, or if the path does not
+- * start with '/', the name of a property of the /aliases
+- * node (an alias). In the case of an alias, the node
+- * matching the alias' value will be returned.
+- * @opts: Address of a pointer into which to store the start of
+- * an options string appended to the end of the path with
+- * a ':' separator.
+- *
+- * Valid paths:
+- * /foo/bar Full path
+- * foo Valid alias
+- * foo/bar Valid alias + relative path
++ * of_find_node_opts_by_path - Find a node matching a full OF path
++ * @path: Either the full path to match, or if the path does not
++ * start with '/', the name of a property of the /aliases
++ * node (an alias). In the case of an alias, the node
++ * matching the alias' value will be returned.
++ * @opts: Address of a pointer into which to store the start of
++ * an options string appended to the end of the path with
++ * a ':' separator.
++ *
++ * Valid paths:
++ * * /foo/bar Full path
++ * * foo Valid alias
++ * * foo/bar Valid alias + relative path
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done.
+ */
+ struct device_node *of_find_node_opts_by_path(const char *path, const char **opts)
+ {
+@@ -958,15 +958,15 @@ struct device_node *of_find_node_opts_by
+ EXPORT_SYMBOL(of_find_node_opts_by_path);
+
+ /**
+- * of_find_node_by_name - Find a node by its "name" property
+- * @from: The node to start searching from or NULL; the node
++ * of_find_node_by_name - Find a node by its "name" property
++ * @from: The node to start searching from or NULL; the node
+ * you pass will not be searched, only the next one
+ * will. Typically, you pass what the previous call
+ * returned. of_node_put() will be called on @from.
+- * @name: The name string to match against
++ * @name: The name string to match against
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done.
+ */
+ struct device_node *of_find_node_by_name(struct device_node *from,
+ const char *name)
+@@ -985,16 +985,16 @@ struct device_node *of_find_node_by_name
+ EXPORT_SYMBOL(of_find_node_by_name);
+
+ /**
+- * of_find_node_by_type - Find a node by its "device_type" property
+- * @from: The node to start searching from, or NULL to start searching
++ * of_find_node_by_type - Find a node by its "device_type" property
++ * @from: The node to start searching from, or NULL to start searching
+ * the entire device tree. The node you pass will not be
+ * searched, only the next one will; typically, you pass
+ * what the previous call returned. of_node_put() will be
+ * called on from for you.
+- * @type: The type string to match against
++ * @type: The type string to match against
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done.
+ */
+ struct device_node *of_find_node_by_type(struct device_node *from,
+ const char *type)
+@@ -1013,18 +1013,18 @@ struct device_node *of_find_node_by_type
+ EXPORT_SYMBOL(of_find_node_by_type);
+
+ /**
+- * of_find_compatible_node - Find a node based on type and one of the
++ * of_find_compatible_node - Find a node based on type and one of the
+ * tokens in its "compatible" property
+- * @from: The node to start searching from or NULL, the node
+- * you pass will not be searched, only the next one
+- * will; typically, you pass what the previous call
+- * returned. of_node_put() will be called on it
+- * @type: The type string to match "device_type" or NULL to ignore
+- * @compatible: The string to match to one of the tokens in the device
+- * "compatible" list.
++ * @from: The node to start searching from or NULL, the node
++ * you pass will not be searched, only the next one
++ * will; typically, you pass what the previous call
++ * returned. of_node_put() will be called on it
++ * @type: The type string to match "device_type" or NULL to ignore
++ * @compatible: The string to match to one of the tokens in the device
++ * "compatible" list.
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done.
+ */
+ struct device_node *of_find_compatible_node(struct device_node *from,
+ const char *type, const char *compatible)
+@@ -1044,16 +1044,16 @@ struct device_node *of_find_compatible_n
+ EXPORT_SYMBOL(of_find_compatible_node);
+
+ /**
+- * of_find_node_with_property - Find a node which has a property with
+- * the given name.
+- * @from: The node to start searching from or NULL, the node
+- * you pass will not be searched, only the next one
+- * will; typically, you pass what the previous call
+- * returned. of_node_put() will be called on it
+- * @prop_name: The name of the property to look for.
++ * of_find_node_with_property - Find a node which has a property with
++ * the given name.
++ * @from: The node to start searching from or NULL, the node
++ * you pass will not be searched, only the next one
++ * will; typically, you pass what the previous call
++ * returned. of_node_put() will be called on it
++ * @prop_name: The name of the property to look for.
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done.
+ */
+ struct device_node *of_find_node_with_property(struct device_node *from,
+ const char *prop_name)
+@@ -1102,10 +1102,10 @@ const struct of_device_id *__of_match_no
+
+ /**
+ * of_match_node - Tell if a device_node has a matching of_match structure
+- * @matches: array of of device match structures to search in
+- * @node: the of device structure to match against
++ * @matches: array of of device match structures to search in
++ * @node: the of device structure to match against
+ *
+- * Low level utility function used by device matching.
++ * Low level utility function used by device matching.
+ */
+ const struct of_device_id *of_match_node(const struct of_device_id *matches,
+ const struct device_node *node)
+@@ -1121,17 +1121,17 @@ const struct of_device_id *of_match_node
+ EXPORT_SYMBOL(of_match_node);
+
+ /**
+- * of_find_matching_node_and_match - Find a node based on an of_device_id
+- * match table.
+- * @from: The node to start searching from or NULL, the node
+- * you pass will not be searched, only the next one
+- * will; typically, you pass what the previous call
+- * returned. of_node_put() will be called on it
+- * @matches: array of of device match structures to search in
+- * @match: Updated to point at the matches entry which matched
++ * of_find_matching_node_and_match - Find a node based on an of_device_id
++ * match table.
++ * @from: The node to start searching from or NULL, the node
++ * you pass will not be searched, only the next one
++ * will; typically, you pass what the previous call
++ * returned. of_node_put() will be called on it
++ * @matches: array of of device match structures to search in
++ * @match: Updated to point at the matches entry which matched
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done.
+ */
+ struct device_node *of_find_matching_node_and_match(struct device_node *from,
+ const struct of_device_id *matches,
+@@ -1465,21 +1465,21 @@ EXPORT_SYMBOL(of_parse_phandle);
+ * Caller is responsible to call of_node_put() on the returned out_args->np
+ * pointer.
+ *
+- * Example:
++ * Example::
+ *
+- * phandle1: node1 {
++ * phandle1: node1 {
+ * #list-cells = <2>;
+- * }
++ * };
+ *
+- * phandle2: node2 {
++ * phandle2: node2 {
+ * #list-cells = <1>;
+- * }
++ * };
+ *
+- * node3 {
++ * node3 {
+ * list = <&phandle1 1 2 &phandle2 3>;
+- * }
++ * };
+ *
+- * To get a device_node of the `node2' node you may call this:
++ * To get a device_node of the ``node2`` node you may call this:
+ * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args);
+ */
+ int of_parse_phandle_with_args(const struct device_node *np, const char *list_name,
+@@ -1517,29 +1517,29 @@ EXPORT_SYMBOL(of_parse_phandle_with_args
+ * Caller is responsible to call of_node_put() on the returned out_args->np
+ * pointer.
+ *
+- * Example:
+- *
+- * phandle1: node1 {
+- * #list-cells = <2>;
+- * }
+- *
+- * phandle2: node2 {
+- * #list-cells = <1>;
+- * }
++ * Example::
+ *
+- * phandle3: node3 {
+- * #list-cells = <1>;
+- * list-map = <0 &phandle2 3>,
+- * <1 &phandle2 2>,
+- * <2 &phandle1 5 1>;
+- * list-map-mask = <0x3>;
+- * };
+- *
+- * node4 {
+- * list = <&phandle1 1 2 &phandle3 0>;
+- * }
++ * phandle1: node1 {
++ * #list-cells = <2>;
++ * };
++ *
++ * phandle2: node2 {
++ * #list-cells = <1>;
++ * };
++ *
++ * phandle3: node3 {
++ * #list-cells = <1>;
++ * list-map = <0 &phandle2 3>,
++ * <1 &phandle2 2>,
++ * <2 &phandle1 5 1>;
++ * list-map-mask = <0x3>;
++ * };
++ *
++ * node4 {
++ * list = <&phandle1 1 2 &phandle3 0>;
++ * };
+ *
+- * To get a device_node of the `node2' node you may call this:
++ * To get a device_node of the ``node2`` node you may call this:
+ * of_parse_phandle_with_args(node4, "list", "list", 1, &args);
+ */
+ int of_parse_phandle_with_args_map(const struct device_node *np,
+@@ -1699,19 +1699,19 @@ EXPORT_SYMBOL(of_parse_phandle_with_args
+ * Caller is responsible to call of_node_put() on the returned out_args->np
+ * pointer.
+ *
+- * Example:
++ * Example::
+ *
+- * phandle1: node1 {
+- * }
++ * phandle1: node1 {
++ * };
+ *
+- * phandle2: node2 {
+- * }
++ * phandle2: node2 {
++ * };
+ *
+- * node3 {
+- * list = <&phandle1 0 2 &phandle2 2 3>;
+- * }
++ * node3 {
++ * list = <&phandle1 0 2 &phandle2 2 3>;
++ * };
+ *
+- * To get a device_node of the `node2' node you may call this:
++ * To get a device_node of the ``node2`` node you may call this:
+ * of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args);
+ */
+ int of_parse_phandle_with_fixed_args(const struct device_node *np,
+@@ -1957,13 +1957,12 @@ static void of_alias_add(struct alias_pr
+
+ /**
+ * of_alias_scan - Scan all properties of the 'aliases' node
++ * @dt_alloc: An allocator that provides a virtual address to memory
++ * for storing the resulting tree
+ *
+ * The function scans all the properties of the 'aliases' node and populates
+ * the global lookup table with the properties. It returns the
+ * number of alias properties found, or an error code in case of failure.
+- *
+- * @dt_alloc: An allocator that provides a virtual address to memory
+- * for storing the resulting tree
+ */
+ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align))
+ {
+@@ -2158,12 +2157,12 @@ bool of_console_check(struct device_node
+ EXPORT_SYMBOL_GPL(of_console_check);
+
+ /**
+- * of_find_next_cache_node - Find a node's subsidiary cache
+- * @np: node of type "cpu" or "cache"
++ * of_find_next_cache_node - Find a node's subsidiary cache
++ * @np: node of type "cpu" or "cache"
+ *
+- * Returns a node pointer with refcount incremented, use
+- * of_node_put() on it when done. Caller should hold a reference
+- * to np.
++ * Return: A node pointer with refcount incremented, use
++ * of_node_put() on it when done. Caller should hold a reference
++ * to np.
+ */
+ struct device_node *of_find_next_cache_node(const struct device_node *np)
+ {
+--- a/drivers/of/fdt.c
++++ b/drivers/of/fdt.c
+@@ -349,11 +349,6 @@ static int unflatten_dt_nodes(const void
+
+ /**
+ * __unflatten_device_tree - create tree of device_nodes from flat blob
+- *
+- * unflattens a device-tree, creating the
+- * tree of struct device_node. It also fills the "name" and "type"
+- * pointers of the nodes so the normal device-tree walking functions
+- * can be used.
+ * @blob: The blob to expand
+ * @dad: Parent device node
+ * @mynodes: The device_node tree created by the call
+@@ -361,6 +356,10 @@ static int unflatten_dt_nodes(const void
+ * for the resulting tree
+ * @detached: if true set OF_DETACHED on @mynodes
+ *
++ * unflattens a device-tree, creating the tree of struct device_node. It also
++ * fills the "name" and "type" pointers of the nodes so the normal device-tree
++ * walking functions can be used.
++ *
+ * Returns NULL on failure or the memory chunk containing the unflattened
+ * device tree on success.
+ */
--- /dev/null
+From 8c8239c2c1fb82f171cb22a707f3bb88a2f22109 Mon Sep 17 00:00:00 2001
+From: Rob Herring <robh@kernel.org>
+Date: Thu, 25 Mar 2021 10:47:12 -0600
+Subject: [PATCH] of: Add missing 'Return' section in kerneldoc comments
+
+Many of the DT kerneldoc comments are lacking a 'Return' section. Let's
+add the section in cases we have a description of return values. There's
+still some cases where the return values are not documented.
+
+Cc: Frank Rowand <frowand.list@gmail.com>
+Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
+Signed-off-by: Rob Herring <robh@kernel.org>
+Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
+Link: https://lore.kernel.org/r/20210325164713.1296407-8-robh@kernel.org
+---
+ drivers/of/base.c | 39 +++++++++++++------------
+ drivers/of/dynamic.c | 19 ++++++++-----
+ drivers/of/fdt.c | 8 +++---
+ drivers/of/irq.c | 14 ++++-----
+ drivers/of/overlay.c | 16 +++++------
+ drivers/of/platform.c | 10 +++----
+ drivers/of/property.c | 66 +++++++++++++++++++++++++++----------------
+ include/linux/of.h | 63 ++++++++++++++++++++++++++---------------
+ 8 files changed, 140 insertions(+), 95 deletions(-)
+
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -244,7 +244,7 @@ struct device_node *__of_find_all_nodes(
+ * @prev: Previous node or NULL to start iteration
+ * of_node_put() will be called on it
+ *
+- * Returns a node pointer with refcount incremented, use
++ * Return: A node pointer with refcount incremented, use
+ * of_node_put() on it when done.
+ */
+ struct device_node *of_find_all_nodes(struct device_node *prev)
+@@ -374,7 +374,7 @@ bool __weak arch_find_n_match_cpu_physic
+ * before booting secondary cores. This function uses arch_match_cpu_phys_id
+ * which can be overridden by architecture specific implementation.
+ *
+- * Returns a node pointer for the logical cpu with refcount incremented, use
++ * Return: A node pointer for the logical cpu with refcount incremented, use
+ * of_node_put() on it when done. Returns NULL if not found.
+ */
+ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
+@@ -394,8 +394,8 @@ EXPORT_SYMBOL(of_get_cpu_node);
+ *
+ * @cpu_node: Pointer to the device_node for CPU.
+ *
+- * Returns the logical CPU number of the given CPU device_node.
+- * Returns -ENODEV if the CPU is not found.
++ * Return: The logical CPU number of the given CPU device_node or -ENODEV if the
++ * CPU is not found.
+ */
+ int of_cpu_node_to_id(struct device_node *cpu_node)
+ {
+@@ -427,7 +427,7 @@ EXPORT_SYMBOL(of_cpu_node_to_id);
+ * bindings. This function check for both and returns the idle state node for
+ * the requested index.
+ *
+- * In case an idle state node is found at @index, the refcount is incremented
++ * Return: An idle state node if found at @index. The refcount is incremented
+ * for it, so call of_node_put() on it when done. Returns NULL if not found.
+ */
+ struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
+@@ -561,7 +561,7 @@ int of_device_compatible_match(struct de
+ * of_machine_is_compatible - Test root of device tree for a given compatible value
+ * @compat: compatible string to look for in root node's compatible property.
+ *
+- * Returns a positive integer if the root node has the given value in its
++ * Return: A positive integer if the root node has the given value in its
+ * compatible property.
+ */
+ int of_machine_is_compatible(const char *compat)
+@@ -583,7 +583,7 @@ EXPORT_SYMBOL(of_machine_is_compatible);
+ *
+ * @device: Node to check for availability, with locks already held
+ *
+- * Returns true if the status property is absent or set to "okay" or "ok",
++ * Return: True if the status property is absent or set to "okay" or "ok",
+ * false otherwise
+ */
+ static bool __of_device_is_available(const struct device_node *device)
+@@ -611,7 +611,7 @@ static bool __of_device_is_available(con
+ *
+ * @device: Node to check for availability
+ *
+- * Returns true if the status property is absent or set to "okay" or "ok",
++ * Return: True if the status property is absent or set to "okay" or "ok",
+ * false otherwise
+ */
+ bool of_device_is_available(const struct device_node *device)
+@@ -632,7 +632,7 @@ EXPORT_SYMBOL(of_device_is_available);
+ *
+ * @device: Node to check for endianness
+ *
+- * Returns true if the device has a "big-endian" property, or if the kernel
++ * Return: True if the device has a "big-endian" property, or if the kernel
+ * was compiled for BE *and* the device has a "native-endian" property.
+ * Returns false otherwise.
+ *
+@@ -816,7 +816,7 @@ EXPORT_SYMBOL(of_get_next_cpu_node);
+ * Lookup child node whose compatible property contains the given compatible
+ * string.
+ *
+- * Returns a node pointer with refcount incremented, use of_node_put() on it
++ * Return: a node pointer with refcount incremented, use of_node_put() on it
+ * when done; or NULL if not found.
+ */
+ struct device_node *of_get_compatible_child(const struct device_node *parent,
+@@ -1170,7 +1170,7 @@ EXPORT_SYMBOL(of_find_matching_node_and_
+ * It does this by stripping the manufacturer prefix (as delimited by a ',')
+ * from the first entry in the compatible list property.
+ *
+- * This routine returns 0 on success, <0 on failure.
++ * Return: This routine returns 0 on success, <0 on failure.
+ */
+ int of_modalias_node(struct device_node *node, char *modalias, int len)
+ {
+@@ -1190,7 +1190,7 @@ EXPORT_SYMBOL_GPL(of_modalias_node);
+ * of_find_node_by_phandle - Find a node given a phandle
+ * @handle: phandle of the node to find
+ *
+- * Returns a node pointer with refcount incremented, use
++ * Return: A node pointer with refcount incremented, use
+ * of_node_put() on it when done.
+ */
+ struct device_node *of_find_node_by_phandle(phandle handle)
+@@ -1431,7 +1431,7 @@ static int __of_parse_phandle_with_args(
+ * @index: For properties holding a table of phandles, this is the index into
+ * the table
+ *
+- * Returns the device_node pointer with refcount incremented. Use
++ * Return: The device_node pointer with refcount incremented. Use
+ * of_node_put() on it when done.
+ */
+ struct device_node *of_parse_phandle(const struct device_node *np,
+@@ -1731,7 +1731,7 @@ EXPORT_SYMBOL(of_parse_phandle_with_fixe
+ * @list_name: property name that contains a list
+ * @cells_name: property name that specifies phandles' arguments count
+ *
+- * Returns the number of phandle + argument tuples within a property. It
++ * Return: The number of phandle + argument tuples within a property. It
+ * is a typical pattern to encode a list of phandle and variable
+ * arguments into a single property. The number of arguments is encoded
+ * by a property in the phandle-target node. For example, a gpios
+@@ -2031,7 +2031,9 @@ void of_alias_scan(void * (*dt_alloc)(u6
+ * @stem: Alias stem of the given device_node
+ *
+ * The function travels the lookup table to get the alias id for the given
+- * device_node and alias stem. It returns the alias id if found.
++ * device_node and alias stem.
++ *
++ * Return: The alias id if found.
+ */
+ int of_alias_get_id(struct device_node *np, const char *stem)
+ {
+@@ -2140,8 +2142,9 @@ EXPORT_SYMBOL_GPL(of_alias_get_highest_i
+ * @index: Index to use for preferred console.
+ *
+ * Check if the given device node matches the stdout-path property in the
+- * /chosen node. If it does then register it as the preferred console and return
+- * TRUE. Otherwise return FALSE.
++ * /chosen node. If it does then register it as the preferred console.
++ *
++ * Return: TRUE if console successfully setup. Otherwise return FALSE.
+ */
+ bool of_console_check(struct device_node *dn, char *name, int index)
+ {
+@@ -2192,7 +2195,7 @@ struct device_node *of_find_next_cache_n
+ *
+ * @cpu: cpu number(logical index) for which the last cache level is needed
+ *
+- * Returns the the level at which the last cache is present. It is exactly
++ * Return: The the level at which the last cache is present. It is exactly
+ * same as the total number of cache levels for the given logical cpu.
+ */
+ int of_find_last_cache_level(unsigned int cpu)
+--- a/drivers/of/dynamic.c
++++ b/drivers/of/dynamic.c
+@@ -27,7 +27,7 @@ static struct device_node *kobj_to_devic
+ * @node: Node to inc refcount, NULL is supported to simplify writing of
+ * callers
+ *
+- * Returns node.
++ * Return: The node with refcount incremented.
+ */
+ struct device_node *of_node_get(struct device_node *node)
+ {
+@@ -104,7 +104,8 @@ int of_reconfig_notify(unsigned long act
+ * @arg - argument of the of notifier
+ *
+ * Returns the new state of a device based on the notifier used.
+- * Returns 0 on device going from enabled to disabled, 1 on device
++ *
++ * Return: 0 on device going from enabled to disabled, 1 on device
+ * going from disabled to enabled and -1 on no change.
+ */
+ int of_reconfig_get_state_change(unsigned long action, struct of_reconfig_data *pr)
+@@ -371,7 +372,8 @@ void of_node_release(struct kobject *kob
+ * property structure and the property name & contents. The property's
+ * flags have the OF_DYNAMIC bit set so that we can differentiate between
+ * dynamically allocated properties and not.
+- * Returns the newly allocated property or NULL on out of memory error.
++ *
++ * Return: The newly allocated property or NULL on out of memory error.
+ */
+ struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags)
+ {
+@@ -414,7 +416,7 @@ struct property *__of_prop_dup(const str
+ * another node. The node data are dynamically allocated and all the node
+ * flags have the OF_DYNAMIC & OF_DETACHED bits set.
+ *
+- * Returns the newly allocated node or NULL on out of memory error.
++ * Return: The newly allocated node or NULL on out of memory error.
+ */
+ struct device_node *__of_node_dup(const struct device_node *np,
+ const char *full_name)
+@@ -780,7 +782,8 @@ static int __of_changeset_apply(struct o
+ * Any side-effects of live tree state changes are applied here on
+ * success, like creation/destruction of devices and side-effects
+ * like creation of sysfs properties and directories.
+- * Returns 0 on success, a negative error value in case of an error.
++ *
++ * Return: 0 on success, a negative error value in case of an error.
+ * On error the partially applied effects are reverted.
+ */
+ int of_changeset_apply(struct of_changeset *ocs)
+@@ -874,7 +877,8 @@ static int __of_changeset_revert(struct
+ * was before the application.
+ * Any side-effects like creation/destruction of devices and
+ * removal of sysfs properties and directories are applied.
+- * Returns 0 on success, a negative error value in case of an error.
++ *
++ * Return: 0 on success, a negative error value in case of an error.
+ */
+ int of_changeset_revert(struct of_changeset *ocs)
+ {
+@@ -902,7 +906,8 @@ EXPORT_SYMBOL_GPL(of_changeset_revert);
+ * + OF_RECONFIG_ADD_PROPERTY
+ * + OF_RECONFIG_REMOVE_PROPERTY,
+ * + OF_RECONFIG_UPDATE_PROPERTY
+- * Returns 0 on success, a negative error value in case of an error.
++ *
++ * Return: 0 on success, a negative error value in case of an error.
+ */
+ int of_changeset_action(struct of_changeset *ocs, unsigned long action,
+ struct device_node *np, struct property *prop)
+--- a/drivers/of/fdt.c
++++ b/drivers/of/fdt.c
+@@ -282,7 +282,7 @@ static void reverse_nodes(struct device_
+ * @dad: Parent struct device_node
+ * @nodepp: The device_node tree created by the call
+ *
+- * It returns the size of unflattened device tree or error code
++ * Return: The size of unflattened device tree or error code
+ */
+ static int unflatten_dt_nodes(const void *blob,
+ void *mem,
+@@ -360,7 +360,7 @@ static int unflatten_dt_nodes(const void
+ * fills the "name" and "type" pointers of the nodes so the normal device-tree
+ * walking functions can be used.
+ *
+- * Returns NULL on failure or the memory chunk containing the unflattened
++ * Return: NULL on failure or the memory chunk containing the unflattened
+ * device tree on success.
+ */
+ void *__unflatten_device_tree(const void *blob,
+@@ -441,7 +441,7 @@ static DEFINE_MUTEX(of_fdt_unflatten_mut
+ * pointers of the nodes so the normal device-tree walking functions
+ * can be used.
+ *
+- * Returns NULL on failure or the memory chunk containing the unflattened
++ * Return: NULL on failure or the memory chunk containing the unflattened
+ * device tree on success.
+ */
+ void *of_fdt_unflatten_tree(const unsigned long *blob,
+@@ -715,7 +715,7 @@ const void *__init of_get_flat_dt_prop(u
+ * @node: node to test
+ * @compat: compatible string to compare with compatible list.
+ *
+- * On match, returns a non-zero value with smaller values returned for more
++ * Return: a non-zero value on match with smaller values returned for more
+ * specific compatible values.
+ */
+ static int of_fdt_is_compatible(const void *blob,
+--- a/drivers/of/irq.c
++++ b/drivers/of/irq.c
+@@ -48,7 +48,7 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
+ * of_irq_find_parent - Given a device node, find its interrupt parent node
+ * @child: pointer to device node
+ *
+- * Returns a pointer to the interrupt parent node, or NULL if the interrupt
++ * Return: A pointer to the interrupt parent node, or NULL if the interrupt
+ * parent could not be determined.
+ */
+ struct device_node *of_irq_find_parent(struct device_node *child)
+@@ -81,14 +81,14 @@ EXPORT_SYMBOL_GPL(of_irq_find_parent);
+ * @addr: address specifier (start of "reg" property of the device) in be32 format
+ * @out_irq: structure of_phandle_args updated by this function
+ *
+- * Returns 0 on success and a negative number on error
+- *
+ * This function is a low-level interrupt tree walking function. It
+ * can be used to do a partial walk with synthetized reg and interrupts
+ * properties, for example when resolving PCI interrupts when no device
+ * node exist for the parent. It takes an interrupt specifier structure as
+ * input, walks the tree looking for any interrupt-map properties, translates
+ * the specifier for each map, and then returns the translated map.
++ *
++ * Return: 0 on success and a negative number on error
+ */
+ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
+ {
+@@ -380,7 +380,7 @@ EXPORT_SYMBOL_GPL(of_irq_to_resource);
+ * @dev: pointer to device tree node
+ * @index: zero-based index of the IRQ
+ *
+- * Returns Linux IRQ number on success, or 0 on the IRQ mapping failure, or
++ * Return: Linux IRQ number on success, or 0 on the IRQ mapping failure, or
+ * -EPROBE_DEFER if the IRQ domain is not yet created, or error code in case
+ * of any other failure.
+ */
+@@ -407,7 +407,7 @@ EXPORT_SYMBOL_GPL(of_irq_get);
+ * @dev: pointer to device tree node
+ * @name: IRQ name
+ *
+- * Returns Linux IRQ number on success, or 0 on the IRQ mapping failure, or
++ * Return: Linux IRQ number on success, or 0 on the IRQ mapping failure, or
+ * -EPROBE_DEFER if the IRQ domain is not yet created, or error code in case
+ * of any other failure.
+ */
+@@ -447,7 +447,7 @@ int of_irq_count(struct device_node *dev
+ * @res: array of resources to fill in
+ * @nr_irqs: the number of IRQs (and upper bound for num of @res elements)
+ *
+- * Returns the size of the filled in table (up to @nr_irqs).
++ * Return: The size of the filled in table (up to @nr_irqs).
+ */
+ int of_irq_to_resource_table(struct device_node *dev, struct resource *res,
+ int nr_irqs)
+@@ -602,7 +602,7 @@ static u32 __of_msi_map_id(struct device
+ * Walk up the device hierarchy looking for devices with a "msi-map"
+ * property. If found, apply the mapping to @id_in.
+ *
+- * Returns the mapped MSI ID.
++ * Return: The mapped MSI ID.
+ */
+ u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in)
+ {
+--- a/drivers/of/overlay.c
++++ b/drivers/of/overlay.c
+@@ -296,7 +296,7 @@ err_free_target_path:
+ *
+ * Update of property in symbols node is not allowed.
+ *
+- * Returns 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
++ * Return: 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
+ * invalid @overlay.
+ */
+ static int add_changeset_property(struct overlay_changeset *ovcs,
+@@ -401,7 +401,7 @@ static int add_changeset_property(struct
+ *
+ * NOTE_2: Multiple mods of created nodes not supported.
+ *
+- * Returns 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
++ * Return: 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
+ * invalid @overlay.
+ */
+ static int add_changeset_node(struct overlay_changeset *ovcs,
+@@ -473,7 +473,7 @@ static int add_changeset_node(struct ove
+ *
+ * Do not allow symbols node to have any children.
+ *
+- * Returns 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
++ * Return: 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
+ * invalid @overlay_node.
+ */
+ static int build_changeset_next_level(struct overlay_changeset *ovcs,
+@@ -604,7 +604,7 @@ static int find_dup_cset_prop(struct ove
+ * the same node or duplicate {add, delete, or update} properties entries
+ * for the same property.
+ *
+- * Returns 0 on success, or -EINVAL if duplicate changeset entry found.
++ * Return: 0 on success, or -EINVAL if duplicate changeset entry found.
+ */
+ static int changeset_dup_entry_check(struct overlay_changeset *ovcs)
+ {
+@@ -628,7 +628,7 @@ static int changeset_dup_entry_check(str
+ * any portions of the changeset that were successfully created will remain
+ * in @ovcs->cset.
+ *
+- * Returns 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
++ * Return: 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
+ * invalid overlay in @ovcs->fragments[].
+ */
+ static int build_changeset(struct overlay_changeset *ovcs)
+@@ -724,7 +724,7 @@ static struct device_node *find_target(s
+ * the top level of @tree. The relevant top level nodes are the fragment
+ * nodes and the __symbols__ node. Any other top level node will be ignored.
+ *
+- * Returns 0 on success, -ENOMEM if memory allocation failure, -EINVAL if error
++ * Return: 0 on success, -ENOMEM if memory allocation failure, -EINVAL if error
+ * detected in @tree, or -ENOSPC if idr_alloc() error.
+ */
+ static int init_overlay_changeset(struct overlay_changeset *ovcs,
+@@ -1179,7 +1179,7 @@ static int overlay_removal_is_ok(struct
+ * If an error is returned by an overlay changeset post-remove notifier
+ * then no further overlay changeset post-remove notifier will be called.
+ *
+- * Returns 0 on success, or a negative error number. *ovcs_id is set to
++ * Return: 0 on success, or a negative error number. *ovcs_id is set to
+ * zero after reverting the changeset, even if a subsequent error occurs.
+ */
+ int of_overlay_remove(int *ovcs_id)
+@@ -1257,7 +1257,7 @@ EXPORT_SYMBOL_GPL(of_overlay_remove);
+ *
+ * Removes all overlays from the system in the correct order.
+ *
+- * Returns 0 on success, or a negative error number
++ * Return: 0 on success, or a negative error number
+ */
+ int of_overlay_remove_all(void)
+ {
+--- a/drivers/of/platform.c
++++ b/drivers/of/platform.c
+@@ -44,7 +44,7 @@ static const struct of_device_id of_skip
+ * Takes a reference to the embedded struct device which needs to be dropped
+ * after use.
+ *
+- * Returns platform_device pointer, or NULL if not found
++ * Return: platform_device pointer, or NULL if not found
+ */
+ struct platform_device *of_find_device_by_node(struct device_node *np)
+ {
+@@ -160,7 +160,7 @@ EXPORT_SYMBOL(of_device_alloc);
+ * @platform_data: pointer to populate platform_data pointer with
+ * @parent: Linux device model parent device.
+ *
+- * Returns pointer to created platform device, or NULL if a device was not
++ * Return: Pointer to created platform device, or NULL if a device was not
+ * registered. Unavailable devices will not get registered.
+ */
+ static struct platform_device *of_platform_device_create_pdata(
+@@ -204,7 +204,7 @@ err_clear_flag:
+ * @bus_id: name to assign device
+ * @parent: Linux device model parent device.
+ *
+- * Returns pointer to created platform device, or NULL if a device was not
++ * Return: Pointer to created platform device, or NULL if a device was not
+ * registered. Unavailable devices will not get registered.
+ */
+ struct platform_device *of_platform_device_create(struct device_node *np,
+@@ -463,7 +463,7 @@ EXPORT_SYMBOL(of_platform_bus_probe);
+ * New board support should be using this function instead of
+ * of_platform_bus_probe().
+ *
+- * Returns 0 on success, < 0 on failure.
++ * Return: 0 on success, < 0 on failure.
+ */
+ int of_platform_populate(struct device_node *root,
+ const struct of_device_id *matches,
+@@ -608,7 +608,7 @@ static void devm_of_platform_populate_re
+ * Similar to of_platform_populate(), but will automatically call
+ * of_platform_depopulate() when the device is unbound from the bus.
+ *
+- * Returns 0 on success, < 0 on failure.
++ * Return: 0 on success, < 0 on failure.
+ */
+ int devm_of_platform_populate(struct device *dev)
+ {
+--- a/drivers/of/property.c
++++ b/drivers/of/property.c
+@@ -60,9 +60,11 @@ EXPORT_SYMBOL(of_graph_is_present);
+ * @elem_size: size of the individual element
+ *
+ * Search for a property in a device node and count the number of elements of
+- * size elem_size in it. Returns number of elements on sucess, -EINVAL if the
+- * property does not exist or its length does not match a multiple of elem_size
+- * and -ENODATA if the property does not have a value.
++ * size elem_size in it.
++ *
++ * Return: The number of elements on sucess, -EINVAL if the property does not
++ * exist or its length does not match a multiple of elem_size and -ENODATA if
++ * the property does not have a value.
+ */
+ int of_property_count_elems_of_size(const struct device_node *np,
+ const char *propname, int elem_size)
+@@ -94,8 +96,9 @@ EXPORT_SYMBOL_GPL(of_property_count_elem
+ * @len: if !=NULL, actual length is written to here
+ *
+ * Search for a property in a device node and valid the requested size.
+- * Returns the property value on success, -EINVAL if the property does not
+- * exist, -ENODATA if property does not have a value, and -EOVERFLOW if the
++ *
++ * Return: The property value on success, -EINVAL if the property does not
++ * exist, -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data is too small or too large.
+ *
+ */
+@@ -128,7 +131,9 @@ static void *of_find_property_value_of_s
+ * @out_value: pointer to return value, modified only if no error.
+ *
+ * Search for a property in a device node and read nth 32-bit value from
+- * it. Returns 0 on success, -EINVAL if the property does not exist,
++ * it.
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+@@ -160,7 +165,9 @@ EXPORT_SYMBOL_GPL(of_property_read_u32_i
+ * @out_value: pointer to return value, modified only if no error.
+ *
+ * Search for a property in a device node and read nth 64-bit value from
+- * it. Returns 0 on success, -EINVAL if the property does not exist,
++ * it.
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+@@ -195,12 +202,14 @@ EXPORT_SYMBOL_GPL(of_property_read_u64_i
+ * sz_min will be read.
+ *
+ * Search for a property in a device node and read 8-bit value(s) from
+- * it. Returns number of elements read on success, -EINVAL if the property
+- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
+- * if the property data is smaller than sz_min or longer than sz_max.
++ * it.
+ *
+ * dts entry of array should be like:
+- * property = /bits/ 8 <0x50 0x60 0x70>;
++ * ``property = /bits/ 8 <0x50 0x60 0x70>;``
++ *
++ * Return: The number of elements read on success, -EINVAL if the property
++ * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
++ * if the property data is smaller than sz_min or longer than sz_max.
+ *
+ * The out_values is modified only if a valid u8 value can be decoded.
+ */
+@@ -243,12 +252,14 @@ EXPORT_SYMBOL_GPL(of_property_read_varia
+ * sz_min will be read.
+ *
+ * Search for a property in a device node and read 16-bit value(s) from
+- * it. Returns number of elements read on success, -EINVAL if the property
+- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
+- * if the property data is smaller than sz_min or longer than sz_max.
++ * it.
+ *
+ * dts entry of array should be like:
+- * property = /bits/ 16 <0x5000 0x6000 0x7000>;
++ * ``property = /bits/ 16 <0x5000 0x6000 0x7000>;``
++ *
++ * Return: The number of elements read on success, -EINVAL if the property
++ * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
++ * if the property data is smaller than sz_min or longer than sz_max.
+ *
+ * The out_values is modified only if a valid u16 value can be decoded.
+ */
+@@ -291,7 +302,9 @@ EXPORT_SYMBOL_GPL(of_property_read_varia
+ * sz_min will be read.
+ *
+ * Search for a property in a device node and read 32-bit value(s) from
+- * it. Returns number of elements read on success, -EINVAL if the property
++ * it.
++ *
++ * Return: The number of elements read on success, -EINVAL if the property
+ * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
+ * if the property data is smaller than sz_min or longer than sz_max.
+ *
+@@ -330,7 +343,9 @@ EXPORT_SYMBOL_GPL(of_property_read_varia
+ * @out_value: pointer to return value, modified only if return value is 0.
+ *
+ * Search for a property in a device node and read a 64-bit value from
+- * it. Returns 0 on success, -EINVAL if the property does not exist,
++ * it.
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+@@ -365,7 +380,9 @@ EXPORT_SYMBOL_GPL(of_property_read_u64);
+ * sz_min will be read.
+ *
+ * Search for a property in a device node and read 64-bit value(s) from
+- * it. Returns number of elements read on success, -EINVAL if the property
++ * it.
++ *
++ * Return: The number of elements read on success, -EINVAL if the property
+ * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
+ * if the property data is smaller than sz_min or longer than sz_max.
+ *
+@@ -407,10 +424,11 @@ EXPORT_SYMBOL_GPL(of_property_read_varia
+ * return value is 0.
+ *
+ * Search for a property in a device tree node and retrieve a null
+- * terminated string value (pointer to data, not a copy). Returns 0 on
+- * success, -EINVAL if the property does not exist, -ENODATA if property
+- * does not have a value, and -EILSEQ if the string is not null-terminated
+- * within the length of the property data.
++ * terminated string value (pointer to data, not a copy).
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist, -ENODATA if
++ * property does not have a value, and -EILSEQ if the string is not
++ * null-terminated within the length of the property data.
+ *
+ * The out_string pointer is modified only if a valid string can be decoded.
+ */
+@@ -774,7 +792,7 @@ EXPORT_SYMBOL(of_graph_get_remote_port_p
+ * @node: pointer to a local endpoint device_node
+ *
+ * Return: Remote port node associated with remote endpoint node linked
+- * to @node. Use of_node_put() on it when done.
++ * to @node. Use of_node_put() on it when done.
+ */
+ struct device_node *of_graph_get_remote_port(const struct device_node *node)
+ {
+@@ -807,7 +825,7 @@ EXPORT_SYMBOL(of_graph_get_endpoint_coun
+ * @endpoint: identifier (value of reg property) of the endpoint node
+ *
+ * Return: Remote device node associated with remote endpoint node linked
+- * to @node. Use of_node_put() on it when done.
++ * to @node. Use of_node_put() on it when done.
+ */
+ struct device_node *of_graph_get_remote_node(const struct device_node *node,
+ u32 port, u32 endpoint)
+--- a/include/linux/of.h
++++ b/include/linux/of.h
+@@ -424,12 +424,14 @@ extern int of_detach_node(struct device_
+ * @sz: number of array elements to read
+ *
+ * Search for a property in a device node and read 8-bit value(s) from
+- * it. Returns 0 on success, -EINVAL if the property does not exist,
+- * -ENODATA if property does not have a value, and -EOVERFLOW if the
+- * property data isn't large enough.
++ * it.
+ *
+ * dts entry of array should be like:
+- * property = /bits/ 8 <0x50 0x60 0x70>;
++ * ``property = /bits/ 8 <0x50 0x60 0x70>;``
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist,
++ * -ENODATA if property does not have a value, and -EOVERFLOW if the
++ * property data isn't large enough.
+ *
+ * The out_values is modified only if a valid u8 value can be decoded.
+ */
+@@ -454,12 +456,14 @@ static inline int of_property_read_u8_ar
+ * @sz: number of array elements to read
+ *
+ * Search for a property in a device node and read 16-bit value(s) from
+- * it. Returns 0 on success, -EINVAL if the property does not exist,
+- * -ENODATA if property does not have a value, and -EOVERFLOW if the
+- * property data isn't large enough.
++ * it.
+ *
+ * dts entry of array should be like:
+- * property = /bits/ 16 <0x5000 0x6000 0x7000>;
++ * ``property = /bits/ 16 <0x5000 0x6000 0x7000>;``
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist,
++ * -ENODATA if property does not have a value, and -EOVERFLOW if the
++ * property data isn't large enough.
+ *
+ * The out_values is modified only if a valid u16 value can be decoded.
+ */
+@@ -485,7 +489,9 @@ static inline int of_property_read_u16_a
+ * @sz: number of array elements to read
+ *
+ * Search for a property in a device node and read 32-bit value(s) from
+- * it. Returns 0 on success, -EINVAL if the property does not exist,
++ * it.
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+@@ -513,7 +519,9 @@ static inline int of_property_read_u32_a
+ * @sz: number of array elements to read
+ *
+ * Search for a property in a device node and read 64-bit value(s) from
+- * it. Returns 0 on success, -EINVAL if the property does not exist,
++ * it.
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+@@ -1063,7 +1071,9 @@ static inline bool of_node_is_type(const
+ * @propname: name of the property to be searched.
+ *
+ * Search for a property in a device node and count the number of u8 elements
+- * in it. Returns number of elements on sucess, -EINVAL if the property does
++ * in it.
++ *
++ * Return: The number of elements on sucess, -EINVAL if the property does
+ * not exist or its length does not match a multiple of u8 and -ENODATA if the
+ * property does not have a value.
+ */
+@@ -1080,7 +1090,9 @@ static inline int of_property_count_u8_e
+ * @propname: name of the property to be searched.
+ *
+ * Search for a property in a device node and count the number of u16 elements
+- * in it. Returns number of elements on sucess, -EINVAL if the property does
++ * in it.
++ *
++ * Return: The number of elements on sucess, -EINVAL if the property does
+ * not exist or its length does not match a multiple of u16 and -ENODATA if the
+ * property does not have a value.
+ */
+@@ -1097,7 +1109,9 @@ static inline int of_property_count_u16_
+ * @propname: name of the property to be searched.
+ *
+ * Search for a property in a device node and count the number of u32 elements
+- * in it. Returns number of elements on sucess, -EINVAL if the property does
++ * in it.
++ *
++ * Return: The number of elements on sucess, -EINVAL if the property does
+ * not exist or its length does not match a multiple of u32 and -ENODATA if the
+ * property does not have a value.
+ */
+@@ -1114,7 +1128,9 @@ static inline int of_property_count_u32_
+ * @propname: name of the property to be searched.
+ *
+ * Search for a property in a device node and count the number of u64 elements
+- * in it. Returns number of elements on sucess, -EINVAL if the property does
++ * in it.
++ *
++ * Return: The number of elements on sucess, -EINVAL if the property does
+ * not exist or its length does not match a multiple of u64 and -ENODATA if the
+ * property does not have a value.
+ */
+@@ -1135,7 +1151,7 @@ static inline int of_property_count_u64_
+ * Search for a property in a device tree node and retrieve a list of
+ * terminated string values (pointer to data, not a copy) in that property.
+ *
+- * If @out_strs is NULL, the number of strings in the property is returned.
++ * Return: If @out_strs is NULL, the number of strings in the property is returned.
+ */
+ static inline int of_property_read_string_array(const struct device_node *np,
+ const char *propname, const char **out_strs,
+@@ -1151,10 +1167,11 @@ static inline int of_property_read_strin
+ * @propname: name of the property to be searched.
+ *
+ * Search for a property in a device tree node and retrieve the number of null
+- * terminated string contain in it. Returns the number of strings on
+- * success, -EINVAL if the property does not exist, -ENODATA if property
+- * does not have a value, and -EILSEQ if the string is not null-terminated
+- * within the length of the property data.
++ * terminated string contain in it.
++ *
++ * Return: The number of strings on success, -EINVAL if the property does not
++ * exist, -ENODATA if property does not have a value, and -EILSEQ if the string
++ * is not null-terminated within the length of the property data.
+ */
+ static inline int of_property_count_strings(const struct device_node *np,
+ const char *propname)
+@@ -1174,7 +1191,8 @@ static inline int of_property_count_stri
+ * Search for a property in a device tree node and retrieve a null
+ * terminated string value (pointer to data, not a copy) in the list of strings
+ * contained in that property.
+- * Returns 0 on success, -EINVAL if the property does not exist, -ENODATA if
++ *
++ * Return: 0 on success, -EINVAL if the property does not exist, -ENODATA if
+ * property does not have a value, and -EILSEQ if the string is not
+ * null-terminated within the length of the property data.
+ *
+@@ -1194,7 +1212,8 @@ static inline int of_property_read_strin
+ * @propname: name of the property to be searched.
+ *
+ * Search for a property in a device node.
+- * Returns true if the property exists false otherwise.
++ *
++ * Return: true if the property exists false otherwise.
+ */
+ static inline bool of_property_read_bool(const struct device_node *np,
+ const char *propname)
+@@ -1440,7 +1459,7 @@ static inline int of_reconfig_get_state_
+ * of_device_is_system_power_controller - Tells if system-power-controller is found for device_node
+ * @np: Pointer to the given device_node
+ *
+- * return true if present false otherwise
++ * Return: true if present false otherwise
+ */
+ static inline bool of_device_is_system_power_controller(const struct device_node *np)
+ {
--- /dev/null
+From 31e46db02ac1351c84e56a18606d17fc1b8390dd Mon Sep 17 00:00:00 2001
+From: Lee Jones <lee.jones@linaro.org>
+Date: Mon, 29 Mar 2021 16:24:35 +0100
+Subject: [PATCH] of: base: Fix spelling issue with function param 'prop'
+
+Fixes the following W=1 kernel build warning(s):
+
+ drivers/of/base.c:1781: warning: Function parameter or member 'prop' not described in '__of_add_property'
+ drivers/of/base.c:1781: warning: Excess function parameter 'prob' description in '__of_add_property'
+ drivers/of/base.c:1804: warning: Function parameter or member 'prop' not described in 'of_add_property'
+ drivers/of/base.c:1804: warning: Excess function parameter 'prob' description in 'of_add_property'
+ drivers/of/base.c:1855: warning: Function parameter or member 'prop' not described in 'of_remove_property'
+ drivers/of/base.c:1855: warning: Excess function parameter 'prob' description in 'of_remove_property'
+
+Cc: Rob Herring <robh+dt@kernel.org>
+Cc: Frank Rowand <frowand.list@gmail.com>
+Cc: "David S. Miller" <davem@davemloft.net>
+Cc: devicetree@vger.kernel.org
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+Link: https://lore.kernel.org/r/20210329152435.900225-1-lee.jones@linaro.org
+Signed-off-by: Rob Herring <robh@kernel.org>
+---
+ drivers/of/base.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -1780,7 +1780,7 @@ EXPORT_SYMBOL(of_count_phandle_with_args
+ /**
+ * __of_add_property - Add a property to a node without lock operations
+ * @np: Caller's Device Node
+- * @prob: Property to add
++ * @prop: Property to add
+ */
+ int __of_add_property(struct device_node *np, struct property *prop)
+ {
+@@ -1803,7 +1803,7 @@ int __of_add_property(struct device_node
+ /**
+ * of_add_property - Add a property to a node
+ * @np: Caller's Device Node
+- * @prob: Property to add
++ * @prop: Property to add
+ */
+ int of_add_property(struct device_node *np, struct property *prop)
+ {
+@@ -1849,7 +1849,7 @@ int __of_remove_property(struct device_n
+ /**
+ * of_remove_property - Remove a property from a node.
+ * @np: Caller's Device Node
+- * @prob: Property to remove
++ * @prop: Property to remove
+ *
+ * Note that we don't actually remove it, since we have given out
+ * who-knows-how-many pointers to the data using get-property.
--- /dev/null
+From 83216e3988cd196183542937c9bd58b279f946af Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Mon, 12 Apr 2021 19:47:17 +0200
+Subject: [PATCH] of: net: pass the dst buffer to of_get_mac_address()
+
+of_get_mac_address() returns a "const void*" pointer to a MAC address.
+Lately, support to fetch the MAC address by an NVMEM provider was added.
+But this will only work with platform devices. It will not work with
+PCI devices (e.g. of an integrated root complex) and esp. not with DSA
+ports.
+
+There is an of_* variant of the nvmem binding which works without
+devices. The returned data of a nvmem_cell_read() has to be freed after
+use. On the other hand the return of_get_mac_address() points to some
+static data without a lifetime. The trick for now, was to allocate a
+device resource managed buffer which is then returned. This will only
+work if we have an actual device.
+
+Change it, so that the caller of of_get_mac_address() has to supply a
+buffer where the MAC address is written to. Unfortunately, this will
+touch all drivers which use the of_get_mac_address().
+
+Usually the code looks like:
+
+ const char *addr;
+ addr = of_get_mac_address(np);
+ if (!IS_ERR(addr))
+ ether_addr_copy(ndev->dev_addr, addr);
+
+This can then be simply rewritten as:
+
+ of_get_mac_address(np, ndev->dev_addr);
+
+Sometimes is_valid_ether_addr() is used to test the MAC address.
+of_get_mac_address() already makes sure, it just returns a valid MAC
+address. Thus we can just test its return code. But we have to be
+careful if there are still other sources for the MAC address before the
+of_get_mac_address(). In this case we have to keep the
+is_valid_ether_addr() call.
+
+The following coccinelle patch was used to convert common cases to the
+new style. Afterwards, I've manually gone over the drivers and fixed the
+return code variable: either used a new one or if one was already
+available use that. Mansour Moufid, thanks for that coccinelle patch!
+
+<spml>
+@a@
+identifier x;
+expression y, z;
+@@
+- x = of_get_mac_address(y);
++ x = of_get_mac_address(y, z);
+ <...
+- ether_addr_copy(z, x);
+ ...>
+
+@@
+identifier a.x;
+@@
+- if (<+... x ...+>) {}
+
+@@
+identifier a.x;
+@@
+ if (<+... x ...+>) {
+ ...
+ }
+- else {}
+
+@@
+identifier a.x;
+expression e;
+@@
+- if (<+... x ...+>@e)
+- {}
+- else
++ if (!(e))
+ {...}
+
+@@
+expression x, y, z;
+@@
+- x = of_get_mac_address(y, z);
++ of_get_mac_address(y, z);
+ ... when != x
+</spml>
+
+All drivers, except drivers/net/ethernet/aeroflex/greth.c, were
+compile-time tested.
+
+Suggested-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: Michael Walle <michael@walle.cc>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ arch/arm/mach-mvebu/kirkwood.c | 3 +-
+ arch/powerpc/sysdev/tsi108_dev.c | 5 +-
+ drivers/net/ethernet/aeroflex/greth.c | 6 +--
+ drivers/net/ethernet/allwinner/sun4i-emac.c | 10 ++--
+ drivers/net/ethernet/altera/altera_tse_main.c | 7 +--
+ drivers/net/ethernet/arc/emac_main.c | 8 +--
+ drivers/net/ethernet/atheros/ag71xx.c | 7 +--
+ drivers/net/ethernet/broadcom/bcm4908_enet.c | 7 +--
+ drivers/net/ethernet/broadcom/bcmsysport.c | 7 +--
+ drivers/net/ethernet/broadcom/bgmac-bcma.c | 10 ++--
+ drivers/net/ethernet/broadcom/bgmac-platform.c | 11 ++--
+ drivers/net/ethernet/cadence/macb_main.c | 11 ++--
+ drivers/net/ethernet/cavium/octeon/octeon_mgmt.c | 8 +--
+ drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 5 +-
+ drivers/net/ethernet/davicom/dm9000.c | 10 ++--
+ drivers/net/ethernet/ethoc.c | 6 +--
+ drivers/net/ethernet/ezchip/nps_enet.c | 7 +--
+ drivers/net/ethernet/freescale/fec_main.c | 7 +--
+ drivers/net/ethernet/freescale/fec_mpc52xx.c | 7 +--
+ drivers/net/ethernet/freescale/fman/mac.c | 9 ++--
+ .../net/ethernet/freescale/fs_enet/fs_enet-main.c | 5 +-
+ drivers/net/ethernet/freescale/gianfar.c | 8 +--
+ drivers/net/ethernet/freescale/ucc_geth.c | 5 +-
+ drivers/net/ethernet/hisilicon/hisi_femac.c | 7 +--
+ drivers/net/ethernet/hisilicon/hix5hd2_gmac.c | 7 +--
+ drivers/net/ethernet/lantiq_xrx200.c | 7 +--
+ drivers/net/ethernet/marvell/mv643xx_eth.c | 5 +-
+ drivers/net/ethernet/marvell/mvneta.c | 6 +--
+ .../net/ethernet/marvell/prestera/prestera_main.c | 11 ++--
+ drivers/net/ethernet/marvell/pxa168_eth.c | 9 +---
+ drivers/net/ethernet/marvell/sky2.c | 8 ++-
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 11 ++--
+ drivers/net/ethernet/micrel/ks8851_common.c | 7 ++-
+ drivers/net/ethernet/microchip/lan743x_main.c | 5 +-
+ drivers/net/ethernet/nxp/lpc_eth.c | 4 +-
+ drivers/net/ethernet/qualcomm/qca_spi.c | 10 ++--
+ drivers/net/ethernet/qualcomm/qca_uart.c | 9 +---
+ drivers/net/ethernet/renesas/ravb_main.c | 12 +++--
+ drivers/net/ethernet/renesas/sh_eth.c | 5 +-
+ .../net/ethernet/samsung/sxgbe/sxgbe_platform.c | 13 ++---
+ drivers/net/ethernet/socionext/sni_ave.c | 10 ++--
+ .../net/ethernet/stmicro/stmmac/dwmac-anarion.c | 2 +-
+ .../ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/dwmac-generic.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/dwmac-intel-plat.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/dwmac-mediatek.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c | 2 +-
+ .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/dwmac-visconti.c | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 +-
+ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
+ .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 14 ++---
+ .../net/ethernet/stmicro/stmmac/stmmac_platform.h | 2 +-
+ drivers/net/ethernet/ti/am65-cpsw-nuss.c | 19 ++++---
+ drivers/net/ethernet/ti/cpsw.c | 7 +--
+ drivers/net/ethernet/ti/cpsw_new.c | 7 +--
+ drivers/net/ethernet/ti/davinci_emac.c | 8 +--
+ drivers/net/ethernet/ti/netcp_core.c | 7 +--
+ drivers/net/ethernet/wiznet/w5100-spi.c | 8 ++-
+ drivers/net/ethernet/wiznet/w5100.c | 2 +-
+ drivers/net/ethernet/xilinx/ll_temac_main.c | 8 +--
+ drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 15 +++---
+ drivers/net/ethernet/xilinx/xilinx_emaclite.c | 8 +--
+ drivers/net/wireless/ath/ath9k/init.c | 5 +-
+ drivers/net/wireless/mediatek/mt76/eeprom.c | 9 +---
+ drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 6 +--
+ drivers/of/of_net.c | 60 ++++++++++------------
+ drivers/staging/octeon/ethernet.c | 10 ++--
+ drivers/staging/wfx/main.c | 7 ++-
+ include/linux/of_net.h | 6 +--
+ include/net/dsa.h | 2 +-
+ net/dsa/dsa2.c | 2 +-
+ net/dsa/slave.c | 2 +-
+ net/ethernet/eth.c | 11 ++--
+ 85 files changed, 218 insertions(+), 364 deletions(-)
+
+--- a/arch/arm/mach-mvebu/kirkwood.c
++++ b/arch/arm/mach-mvebu/kirkwood.c
+@@ -84,6 +84,7 @@ static void __init kirkwood_dt_eth_fixup
+ struct device_node *pnp = of_get_parent(np);
+ struct clk *clk;
+ struct property *pmac;
++ u8 tmpmac[ETH_ALEN];
+ void __iomem *io;
+ u8 *macaddr;
+ u32 reg;
+@@ -93,7 +94,7 @@ static void __init kirkwood_dt_eth_fixup
+
+ /* skip disabled nodes or nodes with valid MAC address*/
+ if (!of_device_is_available(pnp) ||
+- !IS_ERR(of_get_mac_address(np)))
++ !of_get_mac_address(np, tmpmac))
+ goto eth_fixup_skip;
+
+ clk = of_clk_get(pnp, 0);
+--- a/arch/powerpc/sysdev/tsi108_dev.c
++++ b/arch/powerpc/sysdev/tsi108_dev.c
+@@ -73,7 +73,6 @@ static int __init tsi108_eth_of_init(voi
+ struct device_node *phy, *mdio;
+ hw_info tsi_eth_data;
+ const unsigned int *phy_id;
+- const void *mac_addr;
+ const phandle *ph;
+
+ memset(r, 0, sizeof(r));
+@@ -101,9 +100,7 @@ static int __init tsi108_eth_of_init(voi
+ goto err;
+ }
+
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(tsi_eth_data.mac_addr, mac_addr);
++ of_get_mac_address(np, tsi_eth_data.mac_addr);
+
+ ph = of_get_property(np, "mdio-handle", NULL);
+ mdio = of_find_node_by_phandle(*ph);
+--- a/drivers/net/ethernet/aeroflex/greth.c
++++ b/drivers/net/ethernet/aeroflex/greth.c
+@@ -1450,10 +1450,10 @@ static int greth_of_probe(struct platfor
+ break;
+ }
+ if (i == 6) {
+- const u8 *addr;
++ u8 addr[ETH_ALEN];
+
+- addr = of_get_mac_address(ofdev->dev.of_node);
+- if (!IS_ERR(addr)) {
++ err = of_get_mac_address(ofdev->dev.of_node, addr);
++ if (!err) {
+ for (i = 0; i < 6; i++)
+ macaddr[i] = (unsigned int) addr[i];
+ } else {
+--- a/drivers/net/ethernet/allwinner/sun4i-emac.c
++++ b/drivers/net/ethernet/allwinner/sun4i-emac.c
+@@ -790,7 +790,6 @@ static int emac_probe(struct platform_de
+ struct emac_board_info *db;
+ struct net_device *ndev;
+ int ret = 0;
+- const char *mac_addr;
+
+ ndev = alloc_etherdev(sizeof(struct emac_board_info));
+ if (!ndev) {
+@@ -853,12 +852,9 @@ static int emac_probe(struct platform_de
+ }
+
+ /* Read MAC-address from DT */
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ndev->dev_addr, mac_addr);
+-
+- /* Check if the MAC address is valid, if not get a random one */
+- if (!is_valid_ether_addr(ndev->dev_addr)) {
++ ret = of_get_mac_address(np, ndev->dev_addr);
++ if (ret) {
++ /* if the MAC address is invalid get a random one */
+ eth_hw_addr_random(ndev);
+ dev_warn(&pdev->dev, "using random MAC address %pM\n",
+ ndev->dev_addr);
+--- a/drivers/net/ethernet/altera/altera_tse_main.c
++++ b/drivers/net/ethernet/altera/altera_tse_main.c
+@@ -1355,7 +1355,6 @@ static int altera_tse_probe(struct platf
+ struct resource *control_port;
+ struct resource *dma_res;
+ struct altera_tse_private *priv;
+- const unsigned char *macaddr;
+ void __iomem *descmap;
+ const struct of_device_id *of_id = NULL;
+
+@@ -1532,10 +1531,8 @@ static int altera_tse_probe(struct platf
+ priv->rx_dma_buf_sz = ALTERA_RXDMABUFFER_SIZE;
+
+ /* get default MAC address from device tree */
+- macaddr = of_get_mac_address(pdev->dev.of_node);
+- if (!IS_ERR(macaddr))
+- ether_addr_copy(ndev->dev_addr, macaddr);
+- else
++ ret = of_get_mac_address(pdev->dev.of_node, ndev->dev_addr);
++ if (ret)
+ eth_hw_addr_random(ndev);
+
+ /* get phy addr and create mdio */
+--- a/drivers/net/ethernet/arc/emac_main.c
++++ b/drivers/net/ethernet/arc/emac_main.c
+@@ -857,7 +857,6 @@ int arc_emac_probe(struct net_device *nd
+ struct device_node *phy_node;
+ struct phy_device *phydev = NULL;
+ struct arc_emac_priv *priv;
+- const char *mac_addr;
+ unsigned int id, clock_frequency, irq;
+ int err;
+
+@@ -942,11 +941,8 @@ int arc_emac_probe(struct net_device *nd
+ }
+
+ /* Get MAC address from device tree */
+- mac_addr = of_get_mac_address(dev->of_node);
+-
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ndev->dev_addr, mac_addr);
+- else
++ err = of_get_mac_address(dev->of_node, ndev->dev_addr);
++ if (err)
+ eth_hw_addr_random(ndev);
+
+ arc_emac_set_address_internal(ndev);
+--- a/drivers/net/ethernet/atheros/ag71xx.c
++++ b/drivers/net/ethernet/atheros/ag71xx.c
+@@ -1857,7 +1857,6 @@ static int ag71xx_probe(struct platform_
+ const struct ag71xx_dcfg *dcfg;
+ struct net_device *ndev;
+ struct resource *res;
+- const void *mac_addr;
+ int tx_size, err, i;
+ struct ag71xx *ag;
+
+@@ -1953,10 +1952,8 @@ static int ag71xx_probe(struct platform_
+ ag->stop_desc->ctrl = 0;
+ ag->stop_desc->next = (u32)ag->stop_desc_dma;
+
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- memcpy(ndev->dev_addr, mac_addr, ETH_ALEN);
+- if (IS_ERR(mac_addr) || !is_valid_ether_addr(ndev->dev_addr)) {
++ err = of_get_mac_address(np, ndev->dev_addr);
++ if (err) {
+ netif_err(ag, probe, ndev, "invalid MAC address, using random address\n");
+ eth_random_addr(ndev->dev_addr);
+ }
+--- a/drivers/net/ethernet/broadcom/bcmsysport.c
++++ b/drivers/net/ethernet/broadcom/bcmsysport.c
+@@ -2468,7 +2468,6 @@ static int bcm_sysport_probe(struct plat
+ struct bcm_sysport_priv *priv;
+ struct device_node *dn;
+ struct net_device *dev;
+- const void *macaddr;
+ u32 txq, rxq;
+ int ret;
+
+@@ -2563,12 +2562,10 @@ static int bcm_sysport_probe(struct plat
+ }
+
+ /* Initialize netdevice members */
+- macaddr = of_get_mac_address(dn);
+- if (IS_ERR(macaddr)) {
++ ret = of_get_mac_address(dn, dev->dev_addr);
++ if (ret) {
+ dev_warn(&pdev->dev, "using random Ethernet MAC\n");
+ eth_hw_addr_random(dev);
+- } else {
+- ether_addr_copy(dev->dev_addr, macaddr);
+ }
+
+ SET_NETDEV_DEV(dev, &pdev->dev);
+--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
++++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
+@@ -115,7 +115,7 @@ static int bgmac_probe(struct bcma_devic
+ struct ssb_sprom *sprom = &core->bus->sprom;
+ struct mii_bus *mii_bus;
+ struct bgmac *bgmac;
+- const u8 *mac = NULL;
++ const u8 *mac;
+ int err;
+
+ bgmac = bgmac_alloc(&core->dev);
+@@ -128,11 +128,10 @@ static int bgmac_probe(struct bcma_devic
+
+ bcma_set_drvdata(core, bgmac);
+
+- if (bgmac->dev->of_node)
+- mac = of_get_mac_address(bgmac->dev->of_node);
++ err = of_get_mac_address(bgmac->dev->of_node, bgmac->net_dev->dev_addr);
+
+ /* If no MAC address assigned via device tree, check SPROM */
+- if (IS_ERR_OR_NULL(mac)) {
++ if (err) {
+ switch (core->core_unit) {
+ case 0:
+ mac = sprom->et0mac;
+@@ -149,10 +148,9 @@ static int bgmac_probe(struct bcma_devic
+ err = -ENOTSUPP;
+ goto err;
+ }
++ ether_addr_copy(bgmac->net_dev->dev_addr, mac);
+ }
+
+- ether_addr_copy(bgmac->net_dev->dev_addr, mac);
+-
+ /* On BCM4706 we need common core to access PHY */
+ if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
+ !core->bus->drv_gmac_cmn.core) {
+--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
++++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
+@@ -173,7 +173,7 @@ static int bgmac_probe(struct platform_d
+ struct device_node *np = pdev->dev.of_node;
+ struct bgmac *bgmac;
+ struct resource *regs;
+- const u8 *mac_addr;
++ int ret;
+
+ bgmac = bgmac_alloc(&pdev->dev);
+ if (!bgmac)
+@@ -192,11 +192,10 @@ static int bgmac_probe(struct platform_d
+ bgmac->dev = &pdev->dev;
+ bgmac->dma_dev = &pdev->dev;
+
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(bgmac->net_dev->dev_addr, mac_addr);
+- else
+- dev_warn(&pdev->dev, "MAC address not present in device tree\n");
++ ret = of_get_mac_address(np, bgmac->net_dev->dev_addr);
++ if (ret)
++ dev_warn(&pdev->dev,
++ "MAC address not present in device tree\n");
+
+ bgmac->irq = platform_get_irq(pdev, 0);
+ if (bgmac->irq < 0)
+--- a/drivers/net/ethernet/cadence/macb_main.c
++++ b/drivers/net/ethernet/cadence/macb_main.c
+@@ -4487,7 +4487,6 @@ static int macb_probe(struct platform_de
+ struct net_device *dev;
+ struct resource *regs;
+ void __iomem *mem;
+- const char *mac;
+ struct macb *bp;
+ int err, val;
+
+@@ -4600,15 +4599,11 @@ static int macb_probe(struct platform_de
+ if (bp->caps & MACB_CAPS_NEEDS_RSTONUBR)
+ bp->rx_intr_mask |= MACB_BIT(RXUBR);
+
+- mac = of_get_mac_address(np);
+- if (PTR_ERR(mac) == -EPROBE_DEFER) {
+- err = -EPROBE_DEFER;
++ err = of_get_mac_address(np, bp->dev->dev_addr);
++ if (err == -EPROBE_DEFER)
+ goto err_out_free_netdev;
+- } else if (!IS_ERR_OR_NULL(mac)) {
+- ether_addr_copy(bp->dev->dev_addr, mac);
+- } else {
++ else if (err)
+ macb_get_hwaddr(bp);
+- }
+
+ err = of_get_phy_mode(np, &interface);
+ if (err)
+--- a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
++++ b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c
+@@ -1385,7 +1385,6 @@ static int octeon_mgmt_probe(struct plat
+ struct net_device *netdev;
+ struct octeon_mgmt *p;
+ const __be32 *data;
+- const u8 *mac;
+ struct resource *res_mix;
+ struct resource *res_agl;
+ struct resource *res_agl_prt_ctl;
+@@ -1502,11 +1501,8 @@ static int octeon_mgmt_probe(struct plat
+ netdev->min_mtu = 64 - OCTEON_MGMT_RX_HEADROOM;
+ netdev->max_mtu = 16383 - OCTEON_MGMT_RX_HEADROOM - VLAN_HLEN;
+
+- mac = of_get_mac_address(pdev->dev.of_node);
+-
+- if (!IS_ERR(mac))
+- ether_addr_copy(netdev->dev_addr, mac);
+- else
++ result = of_get_mac_address(pdev->dev.of_node, netdev->dev_addr);
++ if (result)
+ eth_hw_addr_random(netdev);
+
+ p->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
+--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
++++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+@@ -1476,7 +1476,6 @@ static int bgx_init_of_phy(struct bgx *b
+ device_for_each_child_node(&bgx->pdev->dev, fwn) {
+ struct phy_device *pd;
+ struct device_node *phy_np;
+- const char *mac;
+
+ /* Should always be an OF node. But if it is not, we
+ * cannot handle it, so exit the loop.
+@@ -1485,9 +1484,7 @@ static int bgx_init_of_phy(struct bgx *b
+ if (!node)
+ break;
+
+- mac = of_get_mac_address(node);
+- if (!IS_ERR(mac))
+- ether_addr_copy(bgx->lmac[lmac].mac, mac);
++ of_get_mac_address(node, bgx->lmac[lmac].mac);
+
+ SET_NETDEV_DEV(&bgx->lmac[lmac].netdev, &bgx->pdev->dev);
+ bgx->lmac[lmac].lmacid = lmac;
+--- a/drivers/net/ethernet/davicom/dm9000.c
++++ b/drivers/net/ethernet/davicom/dm9000.c
+@@ -1388,7 +1388,7 @@ static struct dm9000_plat_data *dm9000_p
+ {
+ struct dm9000_plat_data *pdata;
+ struct device_node *np = dev->of_node;
+- const void *mac_addr;
++ int ret;
+
+ if (!IS_ENABLED(CONFIG_OF) || !np)
+ return ERR_PTR(-ENXIO);
+@@ -1402,11 +1402,9 @@ static struct dm9000_plat_data *dm9000_p
+ if (of_find_property(np, "davicom,no-eeprom", NULL))
+ pdata->flags |= DM9000_PLATF_NO_EEPROM;
+
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(pdata->dev_addr, mac_addr);
+- else if (PTR_ERR(mac_addr) == -EPROBE_DEFER)
+- return ERR_CAST(mac_addr);
++ ret = of_get_mac_address(np, pdata->dev_addr);
++ if (ret == -EPROBE_DEFER)
++ return ERR_PTR(ret);
+
+ return pdata;
+ }
+--- a/drivers/net/ethernet/ethoc.c
++++ b/drivers/net/ethernet/ethoc.c
+@@ -1151,11 +1151,7 @@ static int ethoc_probe(struct platform_d
+ ether_addr_copy(netdev->dev_addr, pdata->hwaddr);
+ priv->phy_id = pdata->phy_id;
+ } else {
+- const void *mac;
+-
+- mac = of_get_mac_address(pdev->dev.of_node);
+- if (!IS_ERR(mac))
+- ether_addr_copy(netdev->dev_addr, mac);
++ of_get_mac_address(pdev->dev.of_node, netdev->dev_addr);
+ priv->phy_id = -1;
+ }
+
+--- a/drivers/net/ethernet/ezchip/nps_enet.c
++++ b/drivers/net/ethernet/ezchip/nps_enet.c
+@@ -575,7 +575,6 @@ static s32 nps_enet_probe(struct platfor
+ struct net_device *ndev;
+ struct nps_enet_priv *priv;
+ s32 err = 0;
+- const char *mac_addr;
+
+ if (!dev->of_node)
+ return -ENODEV;
+@@ -602,10 +601,8 @@ static s32 nps_enet_probe(struct platfor
+ dev_dbg(dev, "Registers base address is 0x%p\n", priv->regs_base);
+
+ /* set kernel MAC address to dev */
+- mac_addr = of_get_mac_address(dev->of_node);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ndev->dev_addr, mac_addr);
+- else
++ err = of_get_mac_address(dev->of_node, ndev->dev_addr);
++ if (err)
+ eth_hw_addr_random(ndev);
+
+ /* Get IRQ number */
+--- a/drivers/net/ethernet/freescale/fec_main.c
++++ b/drivers/net/ethernet/freescale/fec_main.c
+@@ -1666,6 +1666,7 @@ static void fec_get_mac(struct net_devic
+ struct fec_enet_private *fep = netdev_priv(ndev);
+ struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev);
+ unsigned char *iap, tmpaddr[ETH_ALEN];
++ int ret;
+
+ /*
+ * try to get mac address in following order:
+@@ -1681,9 +1682,9 @@ static void fec_get_mac(struct net_devic
+ if (!is_valid_ether_addr(iap)) {
+ struct device_node *np = fep->pdev->dev.of_node;
+ if (np) {
+- const char *mac = of_get_mac_address(np);
+- if (!IS_ERR(mac))
+- iap = (unsigned char *) mac;
++ ret = of_get_mac_address(np, tmpaddr);
++ if (!ret)
++ iap = tmpaddr;
+ }
+ }
+
+--- a/drivers/net/ethernet/freescale/fec_mpc52xx.c
++++ b/drivers/net/ethernet/freescale/fec_mpc52xx.c
+@@ -813,7 +813,6 @@ static int mpc52xx_fec_probe(struct plat
+ const u32 *prop;
+ int prop_size;
+ struct device_node *np = op->dev.of_node;
+- const char *mac_addr;
+
+ phys_addr_t rx_fifo;
+ phys_addr_t tx_fifo;
+@@ -891,10 +890,8 @@ static int mpc52xx_fec_probe(struct plat
+ *
+ * First try to read MAC address from DT
+ */
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr)) {
+- ether_addr_copy(ndev->dev_addr, mac_addr);
+- } else {
++ rv = of_get_mac_address(np, ndev->dev_addr);
++ if (rv) {
+ struct mpc52xx_fec __iomem *fec = priv->fec;
+
+ /*
+--- a/drivers/net/ethernet/freescale/fman/mac.c
++++ b/drivers/net/ethernet/freescale/fman/mac.c
+@@ -616,7 +616,6 @@ static int mac_probe(struct platform_dev
+ struct platform_device *of_dev;
+ struct resource res;
+ struct mac_priv_s *priv;
+- const u8 *mac_addr;
+ u32 val;
+ u8 fman_id;
+ phy_interface_t phy_if;
+@@ -734,11 +733,9 @@ static int mac_probe(struct platform_dev
+ priv->cell_index = (u8)val;
+
+ /* Get the MAC address */
+- mac_addr = of_get_mac_address(mac_node);
+- if (IS_ERR(mac_addr))
++ err = of_get_mac_address(mac_node, mac_dev->addr);
++ if (err)
+ dev_warn(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
+- else
+- ether_addr_copy(mac_dev->addr, mac_addr);
+
+ /* Get the port handles */
+ nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL);
+@@ -864,7 +861,7 @@ static int mac_probe(struct platform_dev
+ if (err < 0)
+ dev_err(dev, "fman_set_mac_active_pause() = %d\n", err);
+
+- if (!IS_ERR(mac_addr))
++ if (!is_zero_ether_addr(mac_dev->addr))
+ dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
+
+ priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev);
+--- a/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c
++++ b/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c
+@@ -918,7 +918,6 @@ static int fs_enet_probe(struct platform
+ const u32 *data;
+ struct clk *clk;
+ int err;
+- const u8 *mac_addr;
+ const char *phy_connection_type;
+ int privsize, len, ret = -ENODEV;
+
+@@ -1006,9 +1005,7 @@ static int fs_enet_probe(struct platform
+ spin_lock_init(&fep->lock);
+ spin_lock_init(&fep->tx_lock);
+
+- mac_addr = of_get_mac_address(ofdev->dev.of_node);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ndev->dev_addr, mac_addr);
++ of_get_mac_address(ofdev->dev.of_node, ndev->dev_addr);
+
+ ret = fep->ops->allocate_bd(ndev);
+ if (ret)
+--- a/drivers/net/ethernet/freescale/gianfar.c
++++ b/drivers/net/ethernet/freescale/gianfar.c
+@@ -641,7 +641,6 @@ static phy_interface_t gfar_get_interfac
+ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
+ {
+ const char *model;
+- const void *mac_addr;
+ int err = 0, i;
+ phy_interface_t interface;
+ struct net_device *dev = NULL;
+@@ -783,11 +782,8 @@ static int gfar_of_init(struct platform_
+ if (stash_len || stash_idx)
+ priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING;
+
+- mac_addr = of_get_mac_address(np);
+-
+- if (!IS_ERR(mac_addr)) {
+- ether_addr_copy(dev->dev_addr, mac_addr);
+- } else {
++ err = of_get_mac_address(np, dev->dev_addr);
++ if (err) {
+ eth_hw_addr_random(dev);
+ dev_info(&ofdev->dev, "Using random MAC address: %pM\n", dev->dev_addr);
+ }
+--- a/drivers/net/ethernet/freescale/ucc_geth.c
++++ b/drivers/net/ethernet/freescale/ucc_geth.c
+@@ -3696,7 +3696,6 @@ static int ucc_geth_probe(struct platfor
+ int err, ucc_num, max_speed = 0;
+ const unsigned int *prop;
+ const char *sprop;
+- const void *mac_addr;
+ phy_interface_t phy_interface;
+ static const int enet_to_speed[] = {
+ SPEED_10, SPEED_10, SPEED_10,
+@@ -3906,9 +3905,7 @@ static int ucc_geth_probe(struct platfor
+ goto err_free_netdev;
+ }
+
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(dev->dev_addr, mac_addr);
++ of_get_mac_address(np, dev->dev_addr);
+
+ ugeth->ug_info = ug_info;
+ ugeth->dev = device;
+--- a/drivers/net/ethernet/hisilicon/hisi_femac.c
++++ b/drivers/net/ethernet/hisilicon/hisi_femac.c
+@@ -772,7 +772,6 @@ static int hisi_femac_drv_probe(struct p
+ struct net_device *ndev;
+ struct hisi_femac_priv *priv;
+ struct phy_device *phy;
+- const char *mac_addr;
+ int ret;
+
+ ndev = alloc_etherdev(sizeof(*priv));
+@@ -842,10 +841,8 @@ static int hisi_femac_drv_probe(struct p
+ (unsigned long)phy->phy_id,
+ phy_modes(phy->interface));
+
+- mac_addr = of_get_mac_address(node);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ndev->dev_addr, mac_addr);
+- if (!is_valid_ether_addr(ndev->dev_addr)) {
++ ret = of_get_mac_address(node, ndev->dev_addr);
++ if (ret) {
+ eth_hw_addr_random(ndev);
+ dev_warn(dev, "using random MAC address %pM\n",
+ ndev->dev_addr);
+--- a/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c
++++ b/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c
+@@ -1098,7 +1098,6 @@ static int hix5hd2_dev_probe(struct plat
+ struct net_device *ndev;
+ struct hix5hd2_priv *priv;
+ struct mii_bus *bus;
+- const char *mac_addr;
+ int ret;
+
+ ndev = alloc_etherdev(sizeof(struct hix5hd2_priv));
+@@ -1220,10 +1219,8 @@ static int hix5hd2_dev_probe(struct plat
+ goto out_phy_node;
+ }
+
+- mac_addr = of_get_mac_address(node);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ndev->dev_addr, mac_addr);
+- if (!is_valid_ether_addr(ndev->dev_addr)) {
++ ret = of_get_mac_address(node, ndev->dev_addr);
++ if (ret) {
+ eth_hw_addr_random(ndev);
+ netdev_warn(ndev, "using random MAC address %pM\n",
+ ndev->dev_addr);
+--- a/drivers/net/ethernet/lantiq_xrx200.c
++++ b/drivers/net/ethernet/lantiq_xrx200.c
+@@ -440,7 +440,6 @@ static int xrx200_probe(struct platform_
+ struct resource *res;
+ struct xrx200_priv *priv;
+ struct net_device *net_dev;
+- const u8 *mac;
+ int err;
+
+ /* alloc the network device */
+@@ -484,10 +483,8 @@ static int xrx200_probe(struct platform_
+ return PTR_ERR(priv->clk);
+ }
+
+- mac = of_get_mac_address(np);
+- if (!IS_ERR(mac))
+- ether_addr_copy(net_dev->dev_addr, mac);
+- else
++ err = of_get_mac_address(np, net_dev->dev_addr);
++ if (err)
+ eth_hw_addr_random(net_dev);
+
+ /* bring up the dma engine and IP core */
+--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
++++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
+@@ -2701,7 +2701,6 @@ static int mv643xx_eth_shared_of_add_por
+ struct platform_device *ppdev;
+ struct mv643xx_eth_platform_data ppd;
+ struct resource res;
+- const char *mac_addr;
+ int ret;
+ int dev_num = 0;
+
+@@ -2732,9 +2731,7 @@ static int mv643xx_eth_shared_of_add_por
+ return -EINVAL;
+ }
+
+- mac_addr = of_get_mac_address(pnp);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ppd.mac_addr, mac_addr);
++ of_get_mac_address(pnp, ppd.mac_addr);
+
+ mv643xx_eth_property(pnp, "tx-queue-size", ppd.tx_queue_size);
+ mv643xx_eth_property(pnp, "tx-sram-addr", ppd.tx_sram_addr);
+--- a/drivers/net/ethernet/marvell/mvneta.c
++++ b/drivers/net/ethernet/marvell/mvneta.c
+@@ -5062,7 +5062,6 @@ static int mvneta_probe(struct platform_
+ struct net_device *dev;
+ struct phylink *phylink;
+ struct phy *comphy;
+- const char *dt_mac_addr;
+ char hw_mac_addr[ETH_ALEN];
+ phy_interface_t phy_mode;
+ const char *mac_from;
+@@ -5158,10 +5157,9 @@ static int mvneta_probe(struct platform_
+ goto err_free_ports;
+ }
+
+- dt_mac_addr = of_get_mac_address(dn);
+- if (!IS_ERR(dt_mac_addr)) {
++ err = of_get_mac_address(dn, dev->dev_addr);
++ if (!err) {
+ mac_from = "device tree";
+- ether_addr_copy(dev->dev_addr, dt_mac_addr);
+ } else {
+ mvneta_get_mac_addr(pp, hw_mac_addr);
+ if (is_valid_ether_addr(hw_mac_addr)) {
+--- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
++++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c
+@@ -466,20 +466,17 @@ static int prestera_switch_set_base_mac_
+ {
+ struct device_node *base_mac_np;
+ struct device_node *np;
+- const char *base_mac;
++ int ret;
+
+ np = of_find_compatible_node(NULL, NULL, "marvell,prestera");
+ base_mac_np = of_parse_phandle(np, "base-mac-provider", 0);
+
+- base_mac = of_get_mac_address(base_mac_np);
+- of_node_put(base_mac_np);
+- if (!IS_ERR(base_mac))
+- ether_addr_copy(sw->base_mac, base_mac);
+-
+- if (!is_valid_ether_addr(sw->base_mac)) {
++ ret = of_get_mac_address(base_mac_np, sw->base_mac);
++ if (ret) {
+ eth_random_addr(sw->base_mac);
+ dev_info(prestera_dev(sw), "using random base mac address\n");
+ }
++ of_node_put(base_mac_np);
+
+ return prestera_hw_switch_mac_set(sw, sw->base_mac);
+ }
+--- a/drivers/net/ethernet/marvell/pxa168_eth.c
++++ b/drivers/net/ethernet/marvell/pxa168_eth.c
+@@ -1392,7 +1392,6 @@ static int pxa168_eth_probe(struct platf
+ struct resource *res;
+ struct clk *clk;
+ struct device_node *np;
+- const unsigned char *mac_addr = NULL;
+ int err;
+
+ printk(KERN_NOTICE "PXA168 10/100 Ethernet Driver\n");
+@@ -1435,12 +1434,8 @@ static int pxa168_eth_probe(struct platf
+
+ INIT_WORK(&pep->tx_timeout_task, pxa168_eth_tx_timeout_task);
+
+- if (pdev->dev.of_node)
+- mac_addr = of_get_mac_address(pdev->dev.of_node);
+-
+- if (!IS_ERR_OR_NULL(mac_addr)) {
+- ether_addr_copy(dev->dev_addr, mac_addr);
+- } else {
++ err = of_get_mac_address(pdev->dev.of_node, dev->dev_addr);
++ if (err) {
+ /* try reading the mac address, if set by the bootloader */
+ pxa168_eth_get_mac_address(dev, dev->dev_addr);
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+--- a/drivers/net/ethernet/marvell/sky2.c
++++ b/drivers/net/ethernet/marvell/sky2.c
+@@ -4725,7 +4725,7 @@ static struct net_device *sky2_init_netd
+ {
+ struct sky2_port *sky2;
+ struct net_device *dev = alloc_etherdev(sizeof(*sky2));
+- const void *iap;
++ int ret;
+
+ if (!dev)
+ return NULL;
+@@ -4795,10 +4795,8 @@ static struct net_device *sky2_init_netd
+ * 1) from device tree data
+ * 2) from internal registers set by bootloader
+ */
+- iap = of_get_mac_address(hw->pdev->dev.of_node);
+- if (!IS_ERR(iap))
+- ether_addr_copy(dev->dev_addr, iap);
+- else
++ ret = of_get_mac_address(hw->pdev->dev.of_node, dev->dev_addr);
++ if (ret)
+ memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
+ ETH_ALEN);
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -2604,14 +2604,11 @@ static int __init mtk_init(struct net_de
+ {
+ struct mtk_mac *mac = netdev_priv(dev);
+ struct mtk_eth *eth = mac->hw;
+- const char *mac_addr;
++ int ret;
+
+- mac_addr = of_get_mac_address(mac->of_node);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(dev->dev_addr, mac_addr);
+-
+- /* If the mac address is invalid, use random mac address */
+- if (!is_valid_ether_addr(dev->dev_addr)) {
++ ret = of_get_mac_address(mac->of_node, dev->dev_addr);
++ if (ret) {
++ /* If the mac address is invalid, use random mac address */
+ eth_hw_addr_random(dev);
+ dev_err(eth->dev, "generated random MAC address %pM\n",
+ dev->dev_addr);
+--- a/drivers/net/ethernet/micrel/ks8851_common.c
++++ b/drivers/net/ethernet/micrel/ks8851_common.c
+@@ -194,11 +194,10 @@ static void ks8851_read_mac_addr(struct
+ static void ks8851_init_mac(struct ks8851_net *ks, struct device_node *np)
+ {
+ struct net_device *dev = ks->netdev;
+- const u8 *mac_addr;
++ int ret;
+
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr)) {
+- ether_addr_copy(dev->dev_addr, mac_addr);
++ ret = of_get_mac_address(np, dev->dev_addr);
++ if (!ret) {
+ ks8851_write_mac_addr(dev);
+ return;
+ }
+--- a/drivers/net/ethernet/microchip/lan743x_main.c
++++ b/drivers/net/ethernet/microchip/lan743x_main.c
+@@ -2831,7 +2831,6 @@ static int lan743x_pcidev_probe(struct p
+ {
+ struct lan743x_adapter *adapter = NULL;
+ struct net_device *netdev = NULL;
+- const void *mac_addr;
+ int ret = -ENODEV;
+
+ netdev = devm_alloc_etherdev(&pdev->dev,
+@@ -2848,9 +2847,7 @@ static int lan743x_pcidev_probe(struct p
+ NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
+ netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
+
+- mac_addr = of_get_mac_address(pdev->dev.of_node);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(adapter->mac_address, mac_addr);
++ of_get_mac_address(pdev->dev.of_node, adapter->mac_address);
+
+ ret = lan743x_pci_init(adapter, pdev);
+ if (ret)
+--- a/drivers/net/ethernet/nxp/lpc_eth.c
++++ b/drivers/net/ethernet/nxp/lpc_eth.c
+@@ -1347,9 +1347,7 @@ static int lpc_eth_drv_probe(struct plat
+ __lpc_get_mac(pldat, ndev->dev_addr);
+
+ if (!is_valid_ether_addr(ndev->dev_addr)) {
+- const char *macaddr = of_get_mac_address(np);
+- if (!IS_ERR(macaddr))
+- ether_addr_copy(ndev->dev_addr, macaddr);
++ of_get_mac_address(np, ndev->dev_addr);
+ }
+ if (!is_valid_ether_addr(ndev->dev_addr))
+ eth_hw_addr_random(ndev);
+--- a/drivers/net/ethernet/qualcomm/qca_spi.c
++++ b/drivers/net/ethernet/qualcomm/qca_spi.c
+@@ -885,7 +885,7 @@ qca_spi_probe(struct spi_device *spi)
+ struct net_device *qcaspi_devs = NULL;
+ u8 legacy_mode = 0;
+ u16 signature;
+- const char *mac;
++ int ret;
+
+ if (!spi->dev.of_node) {
+ dev_err(&spi->dev, "Missing device tree\n");
+@@ -962,12 +962,8 @@ qca_spi_probe(struct spi_device *spi)
+
+ spi_set_drvdata(spi, qcaspi_devs);
+
+- mac = of_get_mac_address(spi->dev.of_node);
+-
+- if (!IS_ERR(mac))
+- ether_addr_copy(qca->net_dev->dev_addr, mac);
+-
+- if (!is_valid_ether_addr(qca->net_dev->dev_addr)) {
++ ret = of_get_mac_address(spi->dev.of_node, qca->net_dev->dev_addr);
++ if (ret) {
+ eth_hw_addr_random(qca->net_dev);
+ dev_info(&spi->dev, "Using random MAC address: %pM\n",
+ qca->net_dev->dev_addr);
+--- a/drivers/net/ethernet/qualcomm/qca_uart.c
++++ b/drivers/net/ethernet/qualcomm/qca_uart.c
+@@ -323,7 +323,6 @@ static int qca_uart_probe(struct serdev_
+ {
+ struct net_device *qcauart_dev = alloc_etherdev(sizeof(struct qcauart));
+ struct qcauart *qca;
+- const char *mac;
+ u32 speed = 115200;
+ int ret;
+
+@@ -348,12 +347,8 @@ static int qca_uart_probe(struct serdev_
+
+ of_property_read_u32(serdev->dev.of_node, "current-speed", &speed);
+
+- mac = of_get_mac_address(serdev->dev.of_node);
+-
+- if (!IS_ERR(mac))
+- ether_addr_copy(qca->net_dev->dev_addr, mac);
+-
+- if (!is_valid_ether_addr(qca->net_dev->dev_addr)) {
++ ret = of_get_mac_address(serdev->dev.of_node, qca->net_dev->dev_addr);
++ if (ret) {
+ eth_hw_addr_random(qca->net_dev);
+ dev_info(&serdev->dev, "Using random MAC address: %pM\n",
+ qca->net_dev->dev_addr);
+--- a/drivers/net/ethernet/renesas/ravb_main.c
++++ b/drivers/net/ethernet/renesas/ravb_main.c
+@@ -109,11 +109,13 @@ static void ravb_set_buffer_align(struct
+ * Ethernet AVB device doesn't have ROM for MAC address.
+ * This function gets the MAC address that was used by a bootloader.
+ */
+-static void ravb_read_mac_address(struct net_device *ndev, const u8 *mac)
++static void ravb_read_mac_address(struct device_node *np,
++ struct net_device *ndev)
+ {
+- if (!IS_ERR(mac)) {
+- ether_addr_copy(ndev->dev_addr, mac);
+- } else {
++ int ret;
++
++ ret = of_get_mac_address(np, ndev->dev_addr);
++ if (ret) {
+ u32 mahr = ravb_read(ndev, MAHR);
+ u32 malr = ravb_read(ndev, MALR);
+
+@@ -2189,7 +2191,7 @@ static int ravb_probe(struct platform_de
+ priv->msg_enable = RAVB_DEF_MSG_ENABLE;
+
+ /* Read and set MAC address */
+- ravb_read_mac_address(ndev, of_get_mac_address(np));
++ ravb_read_mac_address(np, ndev);
+ if (!is_valid_ether_addr(ndev->dev_addr)) {
+ dev_warn(&pdev->dev,
+ "no valid MAC address supplied, using a random one\n");
+--- a/drivers/net/ethernet/renesas/sh_eth.c
++++ b/drivers/net/ethernet/renesas/sh_eth.c
+@@ -3145,7 +3145,6 @@ static struct sh_eth_plat_data *sh_eth_p
+ struct device_node *np = dev->of_node;
+ struct sh_eth_plat_data *pdata;
+ phy_interface_t interface;
+- const char *mac_addr;
+ int ret;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+@@ -3157,9 +3156,7 @@ static struct sh_eth_plat_data *sh_eth_p
+ return NULL;
+ pdata->phy_interface = interface;
+
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(pdata->mac_addr, mac_addr);
++ of_get_mac_address(np, pdata->mac_addr);
+
+ pdata->no_ether_link =
+ of_property_read_bool(np, "renesas,no-ether-link");
+--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c
++++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c
+@@ -25,8 +25,7 @@
+
+ #ifdef CONFIG_OF
+ static int sxgbe_probe_config_dt(struct platform_device *pdev,
+- struct sxgbe_plat_data *plat,
+- const char **mac)
++ struct sxgbe_plat_data *plat)
+ {
+ struct device_node *np = pdev->dev.of_node;
+ struct sxgbe_dma_cfg *dma_cfg;
+@@ -35,7 +34,6 @@ static int sxgbe_probe_config_dt(struct
+ if (!np)
+ return -ENODEV;
+
+- *mac = of_get_mac_address(np);
+ err = of_get_phy_mode(np, &plat->interface);
+ if (err && err != -ENODEV)
+ return err;
+@@ -63,8 +61,7 @@ static int sxgbe_probe_config_dt(struct
+ }
+ #else
+ static int sxgbe_probe_config_dt(struct platform_device *pdev,
+- struct sxgbe_plat_data *plat,
+- const char **mac)
++ struct sxgbe_plat_data *plat)
+ {
+ return -ENOSYS;
+ }
+@@ -85,7 +82,6 @@ static int sxgbe_platform_probe(struct p
+ void __iomem *addr;
+ struct sxgbe_priv_data *priv = NULL;
+ struct sxgbe_plat_data *plat_dat = NULL;
+- const char *mac = NULL;
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct device_node *node = dev->of_node;
+
+@@ -101,7 +97,7 @@ static int sxgbe_platform_probe(struct p
+ if (!plat_dat)
+ return -ENOMEM;
+
+- ret = sxgbe_probe_config_dt(pdev, plat_dat, &mac);
++ ret = sxgbe_probe_config_dt(pdev, plat_dat);
+ if (ret) {
+ pr_err("%s: main dt probe failed\n", __func__);
+ return ret;
+@@ -122,8 +118,7 @@ static int sxgbe_platform_probe(struct p
+ }
+
+ /* Get MAC address if available (DT) */
+- if (!IS_ERR_OR_NULL(mac))
+- ether_addr_copy(priv->dev->dev_addr, mac);
++ of_get_mac_address(node, priv->dev->dev_addr);
+
+ /* Get the TX/RX IRQ numbers */
+ for (i = 0, chan = 1; i < SXGBE_TX_QUEUES; i++) {
+--- a/drivers/net/ethernet/socionext/sni_ave.c
++++ b/drivers/net/ethernet/socionext/sni_ave.c
+@@ -1559,7 +1559,6 @@ static int ave_probe(struct platform_dev
+ struct ave_private *priv;
+ struct net_device *ndev;
+ struct device_node *np;
+- const void *mac_addr;
+ void __iomem *base;
+ const char *name;
+ int i, irq, ret;
+@@ -1600,12 +1599,9 @@ static int ave_probe(struct platform_dev
+
+ ndev->max_mtu = AVE_MAX_ETHFRAME - (ETH_HLEN + ETH_FCS_LEN);
+
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ndev->dev_addr, mac_addr);
+-
+- /* if the mac address is invalid, use random mac address */
+- if (!is_valid_ether_addr(ndev->dev_addr)) {
++ ret = of_get_mac_address(np, ndev->dev_addr);
++ if (ret) {
++ /* if the mac address is invalid, use random mac address */
+ eth_hw_addr_random(ndev);
+ dev_warn(dev, "Using random MAC address: %pM\n",
+ ndev->dev_addr);
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c
+@@ -115,7 +115,7 @@ static int anarion_dwmac_probe(struct pl
+ if (IS_ERR(gmac))
+ return PTR_ERR(gmac);
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
+@@ -445,7 +445,7 @@ static int dwc_eth_dwmac_probe(struct pl
+ if (IS_ERR(stmmac_res.addr))
+ return PTR_ERR(stmmac_res.addr);
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
+@@ -27,7 +27,7 @@ static int dwmac_generic_probe(struct pl
+ return ret;
+
+ if (pdev->dev.of_node) {
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat)) {
+ dev_err(&pdev->dev, "dt configuration failed\n");
+ return PTR_ERR(plat_dat);
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
+@@ -226,7 +226,7 @@ static int imx_dwmac_probe(struct platfo
+ if (!dwmac)
+ return -ENOMEM;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c
+@@ -88,7 +88,7 @@ static int intel_eth_plat_probe(struct p
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat)) {
+ dev_err(&pdev->dev, "dt configuration failed\n");
+ return PTR_ERR(plat_dat);
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
+@@ -255,7 +255,7 @@ static int ipq806x_gmac_probe(struct pla
+ if (val)
+ return val;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c
+@@ -37,7 +37,7 @@ static int lpc18xx_dwmac_probe(struct pl
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
+@@ -407,7 +407,7 @@ static int mediatek_dwmac_probe(struct p
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
+@@ -52,7 +52,7 @@ static int meson6_dwmac_probe(struct pla
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
+@@ -370,7 +370,7 @@ static int meson8b_dwmac_probe(struct pl
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c
+@@ -118,7 +118,7 @@ static int oxnas_dwmac_probe(struct plat
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+@@ -461,7 +461,7 @@ static int qcom_ethqos_probe(struct plat
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat)) {
+ dev_err(&pdev->dev, "dt configuration failed\n");
+ return PTR_ERR(plat_dat);
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+@@ -1392,7 +1392,7 @@ static int rk_gmac_probe(struct platform
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+@@ -397,7 +397,7 @@ static int socfpga_dwmac_probe(struct pl
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
+@@ -325,7 +325,7 @@ static int sti_dwmac_probe(struct platfo
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
+@@ -371,7 +371,7 @@ static int stm32_dwmac_probe(struct plat
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+@@ -1203,7 +1203,7 @@ static int sun8i_dwmac_probe(struct plat
+ if (ret)
+ return -EINVAL;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
+@@ -108,7 +108,7 @@ static int sun7i_gmac_probe(struct platf
+ if (ret)
+ return ret;
+
+- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
++ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+@@ -25,7 +25,7 @@
+
+ struct stmmac_resources {
+ void __iomem *addr;
+- const char *mac;
++ u8 mac[ETH_ALEN];
+ int wol_irq;
+ int lpi_irq;
+ int irq;
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -5008,7 +5008,7 @@ int stmmac_dvr_probe(struct device *devi
+ priv->wol_irq = res->wol_irq;
+ priv->lpi_irq = res->lpi_irq;
+
+- if (!IS_ERR_OR_NULL(res->mac))
++ if (!is_zero_ether_addr(res->mac))
+ memcpy(priv->dev->dev_addr, res->mac, ETH_ALEN);
+
+ dev_set_drvdata(device, priv->dev);
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+@@ -395,7 +395,7 @@ static int stmmac_of_get_mac_mode(struct
+ * set some private fields that will be used by the main at runtime.
+ */
+ struct plat_stmmacenet_data *
+-stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
++stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
+ {
+ struct device_node *np = pdev->dev.of_node;
+ struct plat_stmmacenet_data *plat;
+@@ -407,12 +407,12 @@ stmmac_probe_config_dt(struct platform_d
+ if (!plat)
+ return ERR_PTR(-ENOMEM);
+
+- *mac = of_get_mac_address(np);
+- if (IS_ERR(*mac)) {
+- if (PTR_ERR(*mac) == -EPROBE_DEFER)
+- return ERR_CAST(*mac);
++ rc = of_get_mac_address(np, mac);
++ if (rc) {
++ if (rc == -EPROBE_DEFER)
++ return ERR_PTR(rc);
+
+- *mac = NULL;
++ eth_zero_addr(mac);
+ }
+
+ phy_mode = device_get_phy_mode(&pdev->dev);
+@@ -643,7 +643,7 @@ void stmmac_remove_config_dt(struct plat
+ }
+ #else
+ struct plat_stmmacenet_data *
+-stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
++stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
+ {
+ return ERR_PTR(-EINVAL);
+ }
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
+@@ -12,7 +12,7 @@
+ #include "stmmac.h"
+
+ struct plat_stmmacenet_data *
+-stmmac_probe_config_dt(struct platform_device *pdev, const char **mac);
++stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac);
+ void stmmac_remove_config_dt(struct platform_device *pdev,
+ struct plat_stmmacenet_data *plat);
+
+--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
++++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+@@ -1742,7 +1742,6 @@ static int am65_cpsw_nuss_init_slave_por
+
+ for_each_child_of_node(node, port_np) {
+ struct am65_cpsw_port *port;
+- const void *mac_addr;
+ u32 port_id;
+
+ /* it is not a slave port node, continue */
+@@ -1821,15 +1820,15 @@ static int am65_cpsw_nuss_init_slave_por
+ return ret;
+ }
+
+- mac_addr = of_get_mac_address(port_np);
+- if (!IS_ERR(mac_addr)) {
+- ether_addr_copy(port->slave.mac_addr, mac_addr);
+- } else if (am65_cpsw_am654_get_efuse_macid(port_np,
+- port->port_id,
+- port->slave.mac_addr) ||
+- !is_valid_ether_addr(port->slave.mac_addr)) {
+- random_ether_addr(port->slave.mac_addr);
+- dev_err(dev, "Use random MAC address\n");
++ ret = of_get_mac_address(port_np, port->slave.mac_addr);
++ if (ret) {
++ am65_cpsw_am654_get_efuse_macid(port_np,
++ port->port_id,
++ port->slave.mac_addr);
++ if (!is_valid_ether_addr(port->slave.mac_addr)) {
++ random_ether_addr(port->slave.mac_addr);
++ dev_err(dev, "Use random MAC address\n");
++ }
+ }
+ }
+ of_node_put(node);
+--- a/drivers/net/ethernet/ti/cpsw.c
++++ b/drivers/net/ethernet/ti/cpsw.c
+@@ -1308,7 +1308,6 @@ static int cpsw_probe_dt(struct cpsw_pla
+
+ for_each_available_child_of_node(node, slave_node) {
+ struct cpsw_slave_data *slave_data = data->slave_data + i;
+- const void *mac_addr = NULL;
+ int lenp;
+ const __be32 *parp;
+
+@@ -1380,10 +1379,8 @@ static int cpsw_probe_dt(struct cpsw_pla
+ }
+
+ no_phy_slave:
+- mac_addr = of_get_mac_address(slave_node);
+- if (!IS_ERR(mac_addr)) {
+- ether_addr_copy(slave_data->mac_addr, mac_addr);
+- } else {
++ ret = of_get_mac_address(slave_node, slave_data->mac_addr);
++ if (ret) {
+ ret = ti_cm_get_macid(&pdev->dev, i,
+ slave_data->mac_addr);
+ if (ret)
+--- a/drivers/net/ethernet/ti/cpsw_new.c
++++ b/drivers/net/ethernet/ti/cpsw_new.c
+@@ -1269,7 +1269,6 @@ static int cpsw_probe_dt(struct cpsw_com
+
+ for_each_child_of_node(tmp_node, port_np) {
+ struct cpsw_slave_data *slave_data;
+- const void *mac_addr;
+ u32 port_id;
+
+ ret = of_property_read_u32(port_np, "reg", &port_id);
+@@ -1328,10 +1327,8 @@ static int cpsw_probe_dt(struct cpsw_com
+ goto err_node_put;
+ }
+
+- mac_addr = of_get_mac_address(port_np);
+- if (!IS_ERR(mac_addr)) {
+- ether_addr_copy(slave_data->mac_addr, mac_addr);
+- } else {
++ ret = of_get_mac_address(port_np, slave_data->mac_addr);
++ if (ret) {
+ ret = ti_cm_get_macid(dev, port_id - 1,
+ slave_data->mac_addr);
+ if (ret)
+--- a/drivers/net/ethernet/ti/davinci_emac.c
++++ b/drivers/net/ethernet/ti/davinci_emac.c
+@@ -1699,7 +1699,6 @@ davinci_emac_of_get_pdata(struct platfor
+ const struct of_device_id *match;
+ const struct emac_platform_data *auxdata;
+ struct emac_platform_data *pdata = NULL;
+- const u8 *mac_addr;
+
+ if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+ return dev_get_platdata(&pdev->dev);
+@@ -1711,11 +1710,8 @@ davinci_emac_of_get_pdata(struct platfor
+ np = pdev->dev.of_node;
+ pdata->version = EMAC_VERSION_2;
+
+- if (!is_valid_ether_addr(pdata->mac_addr)) {
+- mac_addr = of_get_mac_address(np);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(pdata->mac_addr, mac_addr);
+- }
++ if (!is_valid_ether_addr(pdata->mac_addr))
++ of_get_mac_address(np, pdata->mac_addr);
+
+ of_property_read_u32(np, "ti,davinci-ctrl-reg-offset",
+ &pdata->ctrl_reg_offset);
+--- a/drivers/net/ethernet/ti/netcp_core.c
++++ b/drivers/net/ethernet/ti/netcp_core.c
+@@ -1966,7 +1966,6 @@ static int netcp_create_interface(struct
+ struct resource res;
+ void __iomem *efuse = NULL;
+ u32 efuse_mac = 0;
+- const void *mac_addr;
+ u8 efuse_mac_addr[6];
+ u32 temp[2];
+ int ret = 0;
+@@ -2036,10 +2035,8 @@ static int netcp_create_interface(struct
+ devm_iounmap(dev, efuse);
+ devm_release_mem_region(dev, res.start, size);
+ } else {
+- mac_addr = of_get_mac_address(node_interface);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(ndev->dev_addr, mac_addr);
+- else
++ ret = of_get_mac_address(node_interface, ndev->dev_addr);
++ if (ret)
+ eth_random_addr(ndev->dev_addr);
+ }
+
+--- a/drivers/net/ethernet/wiznet/w5100-spi.c
++++ b/drivers/net/ethernet/wiznet/w5100-spi.c
+@@ -423,8 +423,14 @@ static int w5100_spi_probe(struct spi_de
+ const struct of_device_id *of_id;
+ const struct w5100_ops *ops;
+ kernel_ulong_t driver_data;
++ const void *mac = NULL;
++ u8 tmpmac[ETH_ALEN];
+ int priv_size;
+- const void *mac = of_get_mac_address(spi->dev.of_node);
++ int ret;
++
++ ret = of_get_mac_address(spi->dev.of_node, tmpmac);
++ if (!ret)
++ mac = tmpmac;
+
+ if (spi->dev.of_node) {
+ of_id = of_match_device(w5100_of_match, &spi->dev);
+--- a/drivers/net/ethernet/wiznet/w5100.c
++++ b/drivers/net/ethernet/wiznet/w5100.c
+@@ -1159,7 +1159,7 @@ int w5100_probe(struct device *dev, cons
+ INIT_WORK(&priv->setrx_work, w5100_setrx_work);
+ INIT_WORK(&priv->restart_work, w5100_restart_work);
+
+- if (!IS_ERR_OR_NULL(mac_addr))
++ if (mac_addr)
+ memcpy(ndev->dev_addr, mac_addr, ETH_ALEN);
+ else
+ eth_hw_addr_random(ndev);
+--- a/drivers/net/ethernet/xilinx/ll_temac_main.c
++++ b/drivers/net/ethernet/xilinx/ll_temac_main.c
+@@ -438,7 +438,7 @@ static void temac_do_set_mac_address(str
+
+ static int temac_init_mac_address(struct net_device *ndev, const void *address)
+ {
+- ether_addr_copy(ndev->dev_addr, address);
++ memcpy(ndev->dev_addr, address, ETH_ALEN);
+ if (!is_valid_ether_addr(ndev->dev_addr))
+ eth_hw_addr_random(ndev);
+ temac_do_set_mac_address(ndev);
+@@ -1370,7 +1370,7 @@ static int temac_probe(struct platform_d
+ struct device_node *temac_np = dev_of_node(&pdev->dev), *dma_np;
+ struct temac_local *lp;
+ struct net_device *ndev;
+- const void *addr;
++ u8 addr[ETH_ALEN];
+ __be32 *p;
+ bool little_endian;
+ int rc = 0;
+@@ -1563,8 +1563,8 @@ static int temac_probe(struct platform_d
+
+ if (temac_np) {
+ /* Retrieve the MAC address */
+- addr = of_get_mac_address(temac_np);
+- if (IS_ERR(addr)) {
++ rc = of_get_mac_address(temac_np, addr);
++ if (rc) {
+ dev_err(&pdev->dev, "could not find MAC address\n");
+ return -ENODEV;
+ }
+--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
++++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+@@ -1843,8 +1843,8 @@ static int axienet_probe(struct platform
+ struct device_node *np;
+ struct axienet_local *lp;
+ struct net_device *ndev;
+- const void *mac_addr;
+ struct resource *ethres;
++ u8 mac_addr[ETH_ALEN];
+ int addr_width = 32;
+ u32 value;
+
+@@ -2044,13 +2044,14 @@ static int axienet_probe(struct platform
+ dev_info(&pdev->dev, "Ethernet core IRQ not defined\n");
+
+ /* Retrieve the MAC address */
+- mac_addr = of_get_mac_address(pdev->dev.of_node);
+- if (IS_ERR(mac_addr)) {
+- dev_warn(&pdev->dev, "could not find MAC address property: %ld\n",
+- PTR_ERR(mac_addr));
+- mac_addr = NULL;
++ ret = of_get_mac_address(pdev->dev.of_node, mac_addr);
++ if (!ret) {
++ axienet_set_mac_address(ndev, mac_addr);
++ } else {
++ dev_warn(&pdev->dev, "could not find MAC address property: %d\n",
++ ret);
++ axienet_set_mac_address(ndev, NULL);
+ }
+- axienet_set_mac_address(ndev, mac_addr);
+
+ lp->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD;
+ lp->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD;
+--- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c
++++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
+@@ -1107,7 +1107,6 @@ static int xemaclite_of_probe(struct pla
+ struct net_device *ndev = NULL;
+ struct net_local *lp = NULL;
+ struct device *dev = &ofdev->dev;
+- const void *mac_address;
+
+ int rc = 0;
+
+@@ -1149,12 +1148,9 @@ static int xemaclite_of_probe(struct pla
+ lp->next_rx_buf_to_use = 0x0;
+ lp->tx_ping_pong = get_bool(ofdev, "xlnx,tx-ping-pong");
+ lp->rx_ping_pong = get_bool(ofdev, "xlnx,rx-ping-pong");
+- mac_address = of_get_mac_address(ofdev->dev.of_node);
+
+- if (!IS_ERR(mac_address)) {
+- /* Set the MAC address. */
+- ether_addr_copy(ndev->dev_addr, mac_address);
+- } else {
++ rc = of_get_mac_address(ofdev->dev.of_node, ndev->dev_addr);
++ if (rc) {
+ dev_warn(dev, "No MAC address found, using random\n");
+ eth_hw_addr_random(ndev);
+ }
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -618,7 +618,6 @@ static int ath9k_of_init(struct ath_soft
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ enum ath_bus_type bus_type = common->bus_ops->ath_bus_type;
+- const char *mac;
+ char eeprom_name[100];
+ int ret;
+
+@@ -641,9 +640,7 @@ static int ath9k_of_init(struct ath_soft
+ ah->ah_flags |= AH_NO_EEP_SWAP;
+ }
+
+- mac = of_get_mac_address(np);
+- if (!IS_ERR(mac))
+- ether_addr_copy(common->macaddr, mac);
++ of_get_mac_address(np, common->macaddr);
+
+ return 0;
+ }
+--- a/drivers/net/wireless/mediatek/mt76/eeprom.c
++++ b/drivers/net/wireless/mediatek/mt76/eeprom.c
+@@ -90,15 +90,9 @@ out_put_node:
+ void
+ mt76_eeprom_override(struct mt76_dev *dev)
+ {
+-#ifdef CONFIG_OF
+ struct device_node *np = dev->dev->of_node;
+- const u8 *mac = NULL;
+
+- if (np)
+- mac = of_get_mac_address(np);
+- if (!IS_ERR_OR_NULL(mac))
+- ether_addr_copy(dev->macaddr, mac);
+-#endif
++ of_get_mac_address(np, dev->macaddr);
+
+ if (!is_valid_ether_addr(dev->macaddr)) {
+ eth_random_addr(dev->macaddr);
+--- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
+@@ -990,11 +990,7 @@ static void rt2x00lib_rate(struct ieee80
+
+ void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr)
+ {
+- const char *mac_addr;
+-
+- mac_addr = of_get_mac_address(rt2x00dev->dev->of_node);
+- if (!IS_ERR(mac_addr))
+- ether_addr_copy(eeprom_mac_addr, mac_addr);
++ of_get_mac_address(rt2x00dev->dev->of_node, eeprom_mac_addr);
+
+ if (!is_valid_ether_addr(eeprom_mac_addr)) {
+ eth_random_addr(eeprom_mac_addr);
+--- a/drivers/of/of_net.c
++++ b/drivers/of/of_net.c
+@@ -45,37 +45,29 @@ int of_get_phy_mode(struct device_node *
+ }
+ EXPORT_SYMBOL_GPL(of_get_phy_mode);
+
+-static const void *of_get_mac_addr(struct device_node *np, const char *name)
++static int of_get_mac_addr(struct device_node *np, const char *name, u8 *addr)
+ {
+ struct property *pp = of_find_property(np, name, NULL);
+
+- if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value))
+- return pp->value;
+- return NULL;
++ if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value)) {
++ memcpy(addr, pp->value, ETH_ALEN);
++ return 0;
++ }
++ return -ENODEV;
+ }
+
+-static const void *of_get_mac_addr_nvmem(struct device_node *np)
++static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr)
+ {
+- int ret;
+- const void *mac;
+- u8 nvmem_mac[ETH_ALEN];
+ struct platform_device *pdev = of_find_device_by_node(np);
++ int ret;
+
+ if (!pdev)
+- return ERR_PTR(-ENODEV);
++ return -ENODEV;
+
+- ret = nvmem_get_mac_address(&pdev->dev, &nvmem_mac);
+- if (ret) {
+- put_device(&pdev->dev);
+- return ERR_PTR(ret);
+- }
+-
+- mac = devm_kmemdup(&pdev->dev, nvmem_mac, ETH_ALEN, GFP_KERNEL);
++ ret = nvmem_get_mac_address(&pdev->dev, addr);
+ put_device(&pdev->dev);
+- if (!mac)
+- return ERR_PTR(-ENOMEM);
+
+- return mac;
++ return ret;
+ }
+
+ /**
+@@ -98,24 +90,27 @@ static const void *of_get_mac_addr_nvmem
+ * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
+ * but is all zeros.
+ *
+- * Return: Will be a valid pointer on success and ERR_PTR in case of error.
++ * Return: 0 on success and errno in case of error.
+ */
+-const void *of_get_mac_address(struct device_node *np)
++int of_get_mac_address(struct device_node *np, u8 *addr)
+ {
+- const void *addr;
+-
+- addr = of_get_mac_addr(np, "mac-address");
+- if (addr)
+- return addr;
++ int ret;
+
+- addr = of_get_mac_addr(np, "local-mac-address");
+- if (addr)
+- return addr;
++ if (!np)
++ return -ENODEV;
+
+- addr = of_get_mac_addr(np, "address");
+- if (addr)
+- return addr;
++ ret = of_get_mac_addr(np, "mac-address", addr);
++ if (!ret)
++ return 0;
++
++ ret = of_get_mac_addr(np, "local-mac-address", addr);
++ if (!ret)
++ return 0;
++
++ ret = of_get_mac_addr(np, "address", addr);
++ if (!ret)
++ return 0;
+
+- return of_get_mac_addr_nvmem(np);
++ return of_get_mac_addr_nvmem(np, addr);
+ }
+ EXPORT_SYMBOL(of_get_mac_address);
+--- a/drivers/staging/octeon/ethernet.c
++++ b/drivers/staging/octeon/ethernet.c
+@@ -407,14 +407,10 @@ static int cvm_oct_common_set_mac_addres
+ int cvm_oct_common_init(struct net_device *dev)
+ {
+ struct octeon_ethernet *priv = netdev_priv(dev);
+- const u8 *mac = NULL;
++ int ret;
+
+- if (priv->of_node)
+- mac = of_get_mac_address(priv->of_node);
+-
+- if (!IS_ERR_OR_NULL(mac))
+- ether_addr_copy(dev->dev_addr, mac);
+- else
++ ret = of_get_mac_address(priv->of_node, dev->dev_addr);
++ if (ret)
+ eth_hw_addr_random(dev);
+
+ /*
+--- a/drivers/staging/wfx/main.c
++++ b/drivers/staging/wfx/main.c
+@@ -339,7 +339,6 @@ int wfx_probe(struct wfx_dev *wdev)
+ {
+ int i;
+ int err;
+- const void *macaddr;
+ struct gpio_desc *gpio_saved;
+
+ // During first part of boot, gpio_wakeup cannot yet been used. So
+@@ -428,9 +427,9 @@ int wfx_probe(struct wfx_dev *wdev)
+
+ for (i = 0; i < ARRAY_SIZE(wdev->addresses); i++) {
+ eth_zero_addr(wdev->addresses[i].addr);
+- macaddr = of_get_mac_address(wdev->dev->of_node);
+- if (!IS_ERR_OR_NULL(macaddr)) {
+- ether_addr_copy(wdev->addresses[i].addr, macaddr);
++ err = of_get_mac_address(wdev->dev->of_node,
++ wdev->addresses[i].addr);
++ if (!err) {
+ wdev->addresses[i].addr[ETH_ALEN - 1] += i;
+ } else {
+ ether_addr_copy(wdev->addresses[i].addr,
+--- a/include/linux/of_net.h
++++ b/include/linux/of_net.h
+@@ -13,7 +13,7 @@
+
+ struct net_device;
+ extern int of_get_phy_mode(struct device_node *np, phy_interface_t *interface);
+-extern const void *of_get_mac_address(struct device_node *np);
++extern int of_get_mac_address(struct device_node *np, u8 *mac);
+ extern struct net_device *of_find_net_device_by_node(struct device_node *np);
+ #else
+ static inline int of_get_phy_mode(struct device_node *np,
+@@ -22,9 +22,9 @@ static inline int of_get_phy_mode(struct
+ return -ENODEV;
+ }
+
+-static inline const void *of_get_mac_address(struct device_node *np)
++static inline int of_get_mac_address(struct device_node *np, u8 *mac)
+ {
+- return ERR_PTR(-ENODEV);
++ return -ENODEV;
+ }
+
+ static inline struct net_device *of_find_net_device_by_node(struct device_node *np)
+--- a/include/net/dsa.h
++++ b/include/net/dsa.h
+@@ -208,7 +208,7 @@ struct dsa_port {
+ unsigned int index;
+ const char *name;
+ struct dsa_port *cpu_dp;
+- const char *mac;
++ u8 mac[ETH_ALEN];
+ struct device_node *dn;
+ unsigned int ageing_time;
+ bool vlan_filtering;
+--- a/net/dsa/dsa2.c
++++ b/net/dsa/dsa2.c
+@@ -288,7 +288,7 @@ static int dsa_port_setup(struct dsa_por
+
+ break;
+ case DSA_PORT_TYPE_USER:
+- dp->mac = of_get_mac_address(dp->dn);
++ of_get_mac_address(dp->dn, dp->mac);
+ err = dsa_slave_create(dp);
+ if (err)
+ break;
+--- a/net/dsa/slave.c
++++ b/net/dsa/slave.c
+@@ -1855,7 +1855,7 @@ int dsa_slave_create(struct dsa_port *po
+ slave_dev->hw_features |= NETIF_F_HW_TC;
+ slave_dev->features |= NETIF_F_LLTX;
+ slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
+- if (!IS_ERR_OR_NULL(port->mac))
++ if (!is_zero_ether_addr(port->mac))
+ ether_addr_copy(slave_dev->dev_addr, port->mac);
+ else
+ eth_hw_addr_inherit(slave_dev, master);
+--- a/net/ethernet/eth.c
++++ b/net/ethernet/eth.c
+@@ -506,13 +506,14 @@ unsigned char * __weak arch_get_platform
+
+ int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr)
+ {
+- const unsigned char *addr = NULL;
++ unsigned char *addr;
++ int ret;
+
+- if (dev->of_node)
+- addr = of_get_mac_address(dev->of_node);
+- if (IS_ERR_OR_NULL(addr))
+- addr = arch_get_platform_mac_address();
++ ret = of_get_mac_address(dev->of_node, mac_addr);
++ if (!ret)
++ return 0;
+
++ addr = arch_get_platform_mac_address();
+ if (!addr)
+ return -ENODEV;
+
--- /dev/null
+From f10843e04a075202dbb39dfcee047e3a2fdf5a8d Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Mon, 12 Apr 2021 19:47:18 +0200
+Subject: [PATCH] of: net: fix of_get_mac_addr_nvmem() for non-platform devices
+
+of_get_mac_address() already supports fetching the MAC address by an
+nvmem provider. But until now, it was just working for platform devices.
+Esp. it was not working for DSA ports and PCI devices. It gets more
+common that PCI devices have a device tree binding since SoCs contain
+integrated root complexes.
+
+Use the nvmem of_* binding to fetch the nvmem cells by a struct
+device_node. We still have to try to read the cell by device first
+because there might be a nvmem_cell_lookup associated with that device.
+
+Signed-off-by: Michael Walle <michael@walle.cc>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/of/of_net.c | 35 ++++++++++++++++++++++++++++++-----
+ 1 file changed, 30 insertions(+), 5 deletions(-)
+
+--- a/drivers/of/of_net.c
++++ b/drivers/of/of_net.c
+@@ -11,6 +11,7 @@
+ #include <linux/phy.h>
+ #include <linux/export.h>
+ #include <linux/device.h>
++#include <linux/nvmem-consumer.h>
+
+ /**
+ * of_get_phy_mode - Get phy mode for given device_node
+@@ -59,15 +60,39 @@ static int of_get_mac_addr(struct device
+ static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr)
+ {
+ struct platform_device *pdev = of_find_device_by_node(np);
++ struct nvmem_cell *cell;
++ const void *mac;
++ size_t len;
+ int ret;
+
+- if (!pdev)
+- return -ENODEV;
++ /* Try lookup by device first, there might be a nvmem_cell_lookup
++ * associated with a given device.
++ */
++ if (pdev) {
++ ret = nvmem_get_mac_address(&pdev->dev, addr);
++ put_device(&pdev->dev);
++ return ret;
++ }
++
++ cell = of_nvmem_cell_get(np, "mac-address");
++ if (IS_ERR(cell))
++ return PTR_ERR(cell);
++
++ mac = nvmem_cell_read(cell, &len);
++ nvmem_cell_put(cell);
++
++ if (IS_ERR(mac))
++ return PTR_ERR(mac);
++
++ if (len != ETH_ALEN || !is_valid_ether_addr(mac)) {
++ kfree(mac);
++ return -EINVAL;
++ }
+
+- ret = nvmem_get_mac_address(&pdev->dev, addr);
+- put_device(&pdev->dev);
++ memcpy(addr, mac, ETH_ALEN);
++ kfree(mac);
+
+- return ret;
++ return 0;
+ }
+
+ /**
--- /dev/null
+From a065d5615fc83908ef21ed8159ffb63d816ff5de Mon Sep 17 00:00:00 2001
+From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+Date: Wed, 28 Jul 2021 16:42:27 +0200
+Subject: [PATCH] of: unify of_count_phandle_with_args() arguments with
+ !CONFIG_OF
+
+Unify the declaration of of_count_phandle_with_args() between enabled
+and disabled OF by making constifying pointed device_node.
+
+Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
+---
+ include/linux/of.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/include/linux/of.h
++++ b/include/linux/of.h
+@@ -889,7 +889,7 @@ static inline int of_parse_phandle_with_
+ return -ENOSYS;
+ }
+
+-static inline int of_count_phandle_with_args(struct device_node *np,
++static inline int of_count_phandle_with_args(const struct device_node *np,
+ const char *list_name,
+ const char *cells_name)
+ {
--- /dev/null
+From 66a8f7f04979f4ad739085f01d99c8caf620b4f5 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 18 Jan 2022 18:35:02 +0100
+Subject: [PATCH] of: base: make small of_parse_phandle() variants static
+ inline
+
+Make all the smaller variants of the of_parse_phandle() static inline.
+This also let us remove the empty function stubs if CONFIG_OF is not
+defined.
+
+Suggested-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Michael Walle <michael@walle.cc>
+[robh: move index < 0 check into __of_parse_phandle_with_args]
+Signed-off-by: Rob Herring <robh@kernel.org>
+Link: https://lore.kernel.org/r/20220118173504.2867523-2-michael@walle.cc
+---
+ drivers/of/base.c | 131 +++------------------------------------
+ include/linux/of.h | 148 ++++++++++++++++++++++++++++++++++++---------
+ 2 files changed, 129 insertions(+), 150 deletions(-)
+
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -1372,15 +1372,18 @@ int of_phandle_iterator_args(struct of_p
+ return count;
+ }
+
+-static int __of_parse_phandle_with_args(const struct device_node *np,
+- const char *list_name,
+- const char *cells_name,
+- int cell_count, int index,
+- struct of_phandle_args *out_args)
++int __of_parse_phandle_with_args(const struct device_node *np,
++ const char *list_name,
++ const char *cells_name,
++ int cell_count, int index,
++ struct of_phandle_args *out_args)
+ {
+ struct of_phandle_iterator it;
+ int rc, cur_index = 0;
+
++ if (index < 0)
++ return -EINVAL;
++
+ /* Loop over the phandles until all the requested entry is found */
+ of_for_each_phandle(&it, rc, np, list_name, cells_name, cell_count) {
+ /*
+@@ -1423,82 +1426,7 @@ static int __of_parse_phandle_with_args(
+ of_node_put(it.node);
+ return rc;
+ }
+-
+-/**
+- * of_parse_phandle - Resolve a phandle property to a device_node pointer
+- * @np: Pointer to device node holding phandle property
+- * @phandle_name: Name of property holding a phandle value
+- * @index: For properties holding a table of phandles, this is the index into
+- * the table
+- *
+- * Return: The device_node pointer with refcount incremented. Use
+- * of_node_put() on it when done.
+- */
+-struct device_node *of_parse_phandle(const struct device_node *np,
+- const char *phandle_name, int index)
+-{
+- struct of_phandle_args args;
+-
+- if (index < 0)
+- return NULL;
+-
+- if (__of_parse_phandle_with_args(np, phandle_name, NULL, 0,
+- index, &args))
+- return NULL;
+-
+- return args.np;
+-}
+-EXPORT_SYMBOL(of_parse_phandle);
+-
+-/**
+- * of_parse_phandle_with_args() - Find a node pointed by phandle in a list
+- * @np: pointer to a device tree node containing a list
+- * @list_name: property name that contains a list
+- * @cells_name: property name that specifies phandles' arguments count
+- * @index: index of a phandle to parse out
+- * @out_args: optional pointer to output arguments structure (will be filled)
+- *
+- * This function is useful to parse lists of phandles and their arguments.
+- * Returns 0 on success and fills out_args, on error returns appropriate
+- * errno value.
+- *
+- * Caller is responsible to call of_node_put() on the returned out_args->np
+- * pointer.
+- *
+- * Example::
+- *
+- * phandle1: node1 {
+- * #list-cells = <2>;
+- * };
+- *
+- * phandle2: node2 {
+- * #list-cells = <1>;
+- * };
+- *
+- * node3 {
+- * list = <&phandle1 1 2 &phandle2 3>;
+- * };
+- *
+- * To get a device_node of the ``node2`` node you may call this:
+- * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args);
+- */
+-int of_parse_phandle_with_args(const struct device_node *np, const char *list_name,
+- const char *cells_name, int index,
+- struct of_phandle_args *out_args)
+-{
+- int cell_count = -1;
+-
+- if (index < 0)
+- return -EINVAL;
+-
+- /* If cells_name is NULL we assume a cell count of 0 */
+- if (!cells_name)
+- cell_count = 0;
+-
+- return __of_parse_phandle_with_args(np, list_name, cells_name,
+- cell_count, index, out_args);
+-}
+-EXPORT_SYMBOL(of_parse_phandle_with_args);
++EXPORT_SYMBOL(__of_parse_phandle_with_args);
+
+ /**
+ * of_parse_phandle_with_args_map() - Find a node pointed by phandle in a list and remap it
+@@ -1685,47 +1613,6 @@ free:
+ EXPORT_SYMBOL(of_parse_phandle_with_args_map);
+
+ /**
+- * of_parse_phandle_with_fixed_args() - Find a node pointed by phandle in a list
+- * @np: pointer to a device tree node containing a list
+- * @list_name: property name that contains a list
+- * @cell_count: number of argument cells following the phandle
+- * @index: index of a phandle to parse out
+- * @out_args: optional pointer to output arguments structure (will be filled)
+- *
+- * This function is useful to parse lists of phandles and their arguments.
+- * Returns 0 on success and fills out_args, on error returns appropriate
+- * errno value.
+- *
+- * Caller is responsible to call of_node_put() on the returned out_args->np
+- * pointer.
+- *
+- * Example::
+- *
+- * phandle1: node1 {
+- * };
+- *
+- * phandle2: node2 {
+- * };
+- *
+- * node3 {
+- * list = <&phandle1 0 2 &phandle2 2 3>;
+- * };
+- *
+- * To get a device_node of the ``node2`` node you may call this:
+- * of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args);
+- */
+-int of_parse_phandle_with_fixed_args(const struct device_node *np,
+- const char *list_name, int cell_count,
+- int index, struct of_phandle_args *out_args)
+-{
+- if (index < 0)
+- return -EINVAL;
+- return __of_parse_phandle_with_args(np, list_name, NULL, cell_count,
+- index, out_args);
+-}
+-EXPORT_SYMBOL(of_parse_phandle_with_fixed_args);
+-
+-/**
+ * of_count_phandle_with_args() - Find the number of phandles references in a property
+ * @np: pointer to a device tree node containing a list
+ * @list_name: property name that contains a list
+--- a/include/linux/of.h
++++ b/include/linux/of.h
+@@ -363,18 +363,12 @@ extern const struct of_device_id *of_mat
+ const struct of_device_id *matches, const struct device_node *node);
+ extern int of_modalias_node(struct device_node *node, char *modalias, int len);
+ extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args);
+-extern struct device_node *of_parse_phandle(const struct device_node *np,
+- const char *phandle_name,
+- int index);
+-extern int of_parse_phandle_with_args(const struct device_node *np,
+- const char *list_name, const char *cells_name, int index,
+- struct of_phandle_args *out_args);
++extern int __of_parse_phandle_with_args(const struct device_node *np,
++ const char *list_name, const char *cells_name, int cell_count,
++ int index, struct of_phandle_args *out_args);
+ extern int of_parse_phandle_with_args_map(const struct device_node *np,
+ const char *list_name, const char *stem_name, int index,
+ struct of_phandle_args *out_args);
+-extern int of_parse_phandle_with_fixed_args(const struct device_node *np,
+- const char *list_name, int cells_count, int index,
+- struct of_phandle_args *out_args);
+ extern int of_count_phandle_with_args(const struct device_node *np,
+ const char *list_name, const char *cells_name);
+
+@@ -857,18 +851,12 @@ static inline int of_property_read_strin
+ return -ENOSYS;
+ }
+
+-static inline struct device_node *of_parse_phandle(const struct device_node *np,
+- const char *phandle_name,
+- int index)
+-{
+- return NULL;
+-}
+-
+-static inline int of_parse_phandle_with_args(const struct device_node *np,
+- const char *list_name,
+- const char *cells_name,
+- int index,
+- struct of_phandle_args *out_args)
++static inline int __of_parse_phandle_with_args(const struct device_node *np,
++ const char *list_name,
++ const char *cells_name,
++ int cell_count,
++ int index,
++ struct of_phandle_args *out_args)
+ {
+ return -ENOSYS;
+ }
+@@ -882,13 +870,6 @@ static inline int of_parse_phandle_with_
+ return -ENOSYS;
+ }
+
+-static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
+- const char *list_name, int cells_count, int index,
+- struct of_phandle_args *out_args)
+-{
+- return -ENOSYS;
+-}
+-
+ static inline int of_count_phandle_with_args(const struct device_node *np,
+ const char *list_name,
+ const char *cells_name)
+@@ -1065,6 +1046,117 @@ static inline bool of_node_is_type(const
+ }
+
+ /**
++ * of_parse_phandle - Resolve a phandle property to a device_node pointer
++ * @np: Pointer to device node holding phandle property
++ * @phandle_name: Name of property holding a phandle value
++ * @index: For properties holding a table of phandles, this is the index into
++ * the table
++ *
++ * Return: The device_node pointer with refcount incremented. Use
++ * of_node_put() on it when done.
++ */
++static inline struct device_node *of_parse_phandle(const struct device_node *np,
++ const char *phandle_name,
++ int index)
++{
++ struct of_phandle_args args;
++
++ if (__of_parse_phandle_with_args(np, phandle_name, NULL, 0,
++ index, &args))
++ return NULL;
++
++ return args.np;
++}
++
++/**
++ * of_parse_phandle_with_args() - Find a node pointed by phandle in a list
++ * @np: pointer to a device tree node containing a list
++ * @list_name: property name that contains a list
++ * @cells_name: property name that specifies phandles' arguments count
++ * @index: index of a phandle to parse out
++ * @out_args: optional pointer to output arguments structure (will be filled)
++ *
++ * This function is useful to parse lists of phandles and their arguments.
++ * Returns 0 on success and fills out_args, on error returns appropriate
++ * errno value.
++ *
++ * Caller is responsible to call of_node_put() on the returned out_args->np
++ * pointer.
++ *
++ * Example::
++ *
++ * phandle1: node1 {
++ * #list-cells = <2>;
++ * };
++ *
++ * phandle2: node2 {
++ * #list-cells = <1>;
++ * };
++ *
++ * node3 {
++ * list = <&phandle1 1 2 &phandle2 3>;
++ * };
++ *
++ * To get a device_node of the ``node2`` node you may call this:
++ * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args);
++ */
++static inline int of_parse_phandle_with_args(const struct device_node *np,
++ const char *list_name,
++ const char *cells_name,
++ int index,
++ struct of_phandle_args *out_args)
++{
++ int cell_count = -1;
++
++ /* If cells_name is NULL we assume a cell count of 0 */
++ if (!cells_name)
++ cell_count = 0;
++
++ return __of_parse_phandle_with_args(np, list_name, cells_name,
++ cell_count, index, out_args);
++}
++
++/**
++ * of_parse_phandle_with_fixed_args() - Find a node pointed by phandle in a list
++ * @np: pointer to a device tree node containing a list
++ * @list_name: property name that contains a list
++ * @cell_count: number of argument cells following the phandle
++ * @index: index of a phandle to parse out
++ * @out_args: optional pointer to output arguments structure (will be filled)
++ *
++ * This function is useful to parse lists of phandles and their arguments.
++ * Returns 0 on success and fills out_args, on error returns appropriate
++ * errno value.
++ *
++ * Caller is responsible to call of_node_put() on the returned out_args->np
++ * pointer.
++ *
++ * Example::
++ *
++ * phandle1: node1 {
++ * };
++ *
++ * phandle2: node2 {
++ * };
++ *
++ * node3 {
++ * list = <&phandle1 0 2 &phandle2 2 3>;
++ * };
++ *
++ * To get a device_node of the ``node2`` node you may call this:
++ * of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args);
++ */
++static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
++ const char *list_name,
++ int cell_count,
++ int index,
++ struct of_phandle_args *out_args)
++{
++ return __of_parse_phandle_with_args(np, list_name, NULL, cell_count,
++ index, out_args);
++}
++
++/**
+ * of_property_count_u8_elems - Count the number of u8 elements in a property
+ *
+ * @np: device node from which the property value is to be read.
--- /dev/null
+From 8eddceb280f5deb8046fcb660de9f9f683b408b9 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 6 Dec 2022 21:07:21 +0100
+Subject: [PATCH] of: base: add of_parse_phandle_with_optional_args()
+
+Add a new variant of the of_parse_phandle_with_args() which treats the
+cells name as optional. If it's missing, it is assumed that the phandle
+has no arguments.
+
+Up until now, a nvmem node didn't have any arguments, so all the device
+trees haven't any '#*-cells' property. But there is a need for an
+additional argument for the phandle, for which we need a '#*-cells'
+property. Therefore, we need to support nvmem nodes with and without
+this property.
+
+Signed-off-by: Michael Walle <michael@walle.cc>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+---
+ include/linux/of.h | 25 +++++++++++++++++++++++++
+ 1 file changed, 25 insertions(+)
+
+--- a/include/linux/of.h
++++ b/include/linux/of.h
+@@ -1157,6 +1157,31 @@ static inline int of_parse_phandle_with_
+ }
+
+ /**
++ * of_parse_phandle_with_optional_args() - Find a node pointed by phandle in a list
++ * @np: pointer to a device tree node containing a list
++ * @list_name: property name that contains a list
++ * @cells_name: property name that specifies phandles' arguments count
++ * @index: index of a phandle to parse out
++ * @out_args: optional pointer to output arguments structure (will be filled)
++ *
++ * Same as of_parse_phandle_with_args() except that if the cells_name property
++ * is not found, cell_count of 0 is assumed.
++ *
++ * This is used to useful, if you have a phandle which didn't have arguments
++ * before and thus doesn't have a '#*-cells' property but is now migrated to
++ * having arguments while retaining backwards compatibility.
++ */
++static inline int of_parse_phandle_with_optional_args(const struct device_node *np,
++ const char *list_name,
++ const char *cells_name,
++ int index,
++ struct of_phandle_args *out_args)
++{
++ return __of_parse_phandle_with_args(np, list_name, cells_name,
++ 0, index, out_args);
++}
++
++/**
+ * of_property_count_u8_elems - Count the number of u8 elements in a property
+ *
+ * @np: device node from which the property value is to be read.
--- /dev/null
+From 4f4145c9fee8c7a445dbbbadceccce5391e6b287 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 6 Dec 2022 21:07:22 +0100
+Subject: [PATCH] of: property: make #.*-cells optional for simple props
+
+Sometimes, future bindings for phandles will get additional arguments.
+Thus the target node of the phandle will need a new #.*-cells property.
+To be backwards compatible, this needs to be optional.
+
+Prepare the DEFINE_SIMPLE_PROPS() to handle the cells name as optional.
+
+Signed-off-by: Michael Walle <michael@walle.cc>
+Tested-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+---
+ drivers/of/property.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/of/property.c
++++ b/drivers/of/property.c
+@@ -1267,8 +1267,8 @@ static struct device_node *parse_suffix_
+ if (strcmp_suffix(prop_name, suffix))
+ return NULL;
+
+- if (of_parse_phandle_with_args(np, prop_name, cells_name, index,
+- &sup_args))
++ if (__of_parse_phandle_with_args(np, prop_name, cells_name, 0, index,
++ &sup_args))
+ return NULL;
+
+ return sup_args.np;
--- /dev/null
+From 9cf9486a6a7e8a3d76154d0c506051ba3740e8b6 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 6 Dec 2022 21:07:23 +0100
+Subject: [PATCH] of: property: add #nvmem-cell-cells property
+
+Bindings describe the new '#nvmem-cell-cells' property. Now that the
+arguments count property is optional, we just add this property to the
+nvmem-cells.
+
+Signed-off-by: Michael Walle <michael@walle.cc>
+Tested-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+---
+ drivers/of/property.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/of/property.c
++++ b/drivers/of/property.c
+@@ -1314,7 +1314,7 @@ DEFINE_SIMPLE_PROP(hwlocks, "hwlocks", "
+ DEFINE_SIMPLE_PROP(extcon, "extcon", NULL)
+ DEFINE_SIMPLE_PROP(interrupts_extended, "interrupts-extended",
+ "#interrupt-cells")
+-DEFINE_SIMPLE_PROP(nvmem_cells, "nvmem-cells", NULL)
++DEFINE_SIMPLE_PROP(nvmem_cells, "nvmem-cells", "#nvmem-cell-cells")
+ DEFINE_SIMPLE_PROP(phys, "phys", "#phy-cells")
+ DEFINE_SIMPLE_PROP(wakeup_parent, "wakeup-parent", NULL)
+ DEFINE_SIMPLE_PROP(pinctrl0, "pinctrl-0", NULL)
--- /dev/null
+From 66a8f7f04979f4ad739085f01d99c8caf620b4f5 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 18 Jan 2022 18:35:02 +0100
+Subject: [PATCH] of: base: make small of_parse_phandle() variants static
+ inline
+
+Make all the smaller variants of the of_parse_phandle() static inline.
+This also let us remove the empty function stubs if CONFIG_OF is not
+defined.
+
+Suggested-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Michael Walle <michael@walle.cc>
+[robh: move index < 0 check into __of_parse_phandle_with_args]
+Signed-off-by: Rob Herring <robh@kernel.org>
+Link: https://lore.kernel.org/r/20220118173504.2867523-2-michael@walle.cc
+---
+ drivers/of/base.c | 131 +++------------------------------------
+ include/linux/of.h | 148 ++++++++++++++++++++++++++++++++++++---------
+ 2 files changed, 129 insertions(+), 150 deletions(-)
+
+--- a/drivers/of/base.c
++++ b/drivers/of/base.c
+@@ -1371,15 +1371,18 @@ int of_phandle_iterator_args(struct of_p
+ return count;
+ }
+
+-static int __of_parse_phandle_with_args(const struct device_node *np,
+- const char *list_name,
+- const char *cells_name,
+- int cell_count, int index,
+- struct of_phandle_args *out_args)
++int __of_parse_phandle_with_args(const struct device_node *np,
++ const char *list_name,
++ const char *cells_name,
++ int cell_count, int index,
++ struct of_phandle_args *out_args)
+ {
+ struct of_phandle_iterator it;
+ int rc, cur_index = 0;
+
++ if (index < 0)
++ return -EINVAL;
++
+ /* Loop over the phandles until all the requested entry is found */
+ of_for_each_phandle(&it, rc, np, list_name, cells_name, cell_count) {
+ /*
+@@ -1422,82 +1425,7 @@ static int __of_parse_phandle_with_args(
+ of_node_put(it.node);
+ return rc;
+ }
+-
+-/**
+- * of_parse_phandle - Resolve a phandle property to a device_node pointer
+- * @np: Pointer to device node holding phandle property
+- * @phandle_name: Name of property holding a phandle value
+- * @index: For properties holding a table of phandles, this is the index into
+- * the table
+- *
+- * Return: The device_node pointer with refcount incremented. Use
+- * of_node_put() on it when done.
+- */
+-struct device_node *of_parse_phandle(const struct device_node *np,
+- const char *phandle_name, int index)
+-{
+- struct of_phandle_args args;
+-
+- if (index < 0)
+- return NULL;
+-
+- if (__of_parse_phandle_with_args(np, phandle_name, NULL, 0,
+- index, &args))
+- return NULL;
+-
+- return args.np;
+-}
+-EXPORT_SYMBOL(of_parse_phandle);
+-
+-/**
+- * of_parse_phandle_with_args() - Find a node pointed by phandle in a list
+- * @np: pointer to a device tree node containing a list
+- * @list_name: property name that contains a list
+- * @cells_name: property name that specifies phandles' arguments count
+- * @index: index of a phandle to parse out
+- * @out_args: optional pointer to output arguments structure (will be filled)
+- *
+- * This function is useful to parse lists of phandles and their arguments.
+- * Returns 0 on success and fills out_args, on error returns appropriate
+- * errno value.
+- *
+- * Caller is responsible to call of_node_put() on the returned out_args->np
+- * pointer.
+- *
+- * Example::
+- *
+- * phandle1: node1 {
+- * #list-cells = <2>;
+- * };
+- *
+- * phandle2: node2 {
+- * #list-cells = <1>;
+- * };
+- *
+- * node3 {
+- * list = <&phandle1 1 2 &phandle2 3>;
+- * };
+- *
+- * To get a device_node of the ``node2`` node you may call this:
+- * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args);
+- */
+-int of_parse_phandle_with_args(const struct device_node *np, const char *list_name,
+- const char *cells_name, int index,
+- struct of_phandle_args *out_args)
+-{
+- int cell_count = -1;
+-
+- if (index < 0)
+- return -EINVAL;
+-
+- /* If cells_name is NULL we assume a cell count of 0 */
+- if (!cells_name)
+- cell_count = 0;
+-
+- return __of_parse_phandle_with_args(np, list_name, cells_name,
+- cell_count, index, out_args);
+-}
+-EXPORT_SYMBOL(of_parse_phandle_with_args);
++EXPORT_SYMBOL(__of_parse_phandle_with_args);
+
+ /**
+ * of_parse_phandle_with_args_map() - Find a node pointed by phandle in a list and remap it
+@@ -1684,47 +1612,6 @@ free:
+ EXPORT_SYMBOL(of_parse_phandle_with_args_map);
+
+ /**
+- * of_parse_phandle_with_fixed_args() - Find a node pointed by phandle in a list
+- * @np: pointer to a device tree node containing a list
+- * @list_name: property name that contains a list
+- * @cell_count: number of argument cells following the phandle
+- * @index: index of a phandle to parse out
+- * @out_args: optional pointer to output arguments structure (will be filled)
+- *
+- * This function is useful to parse lists of phandles and their arguments.
+- * Returns 0 on success and fills out_args, on error returns appropriate
+- * errno value.
+- *
+- * Caller is responsible to call of_node_put() on the returned out_args->np
+- * pointer.
+- *
+- * Example::
+- *
+- * phandle1: node1 {
+- * };
+- *
+- * phandle2: node2 {
+- * };
+- *
+- * node3 {
+- * list = <&phandle1 0 2 &phandle2 2 3>;
+- * };
+- *
+- * To get a device_node of the ``node2`` node you may call this:
+- * of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args);
+- */
+-int of_parse_phandle_with_fixed_args(const struct device_node *np,
+- const char *list_name, int cell_count,
+- int index, struct of_phandle_args *out_args)
+-{
+- if (index < 0)
+- return -EINVAL;
+- return __of_parse_phandle_with_args(np, list_name, NULL, cell_count,
+- index, out_args);
+-}
+-EXPORT_SYMBOL(of_parse_phandle_with_fixed_args);
+-
+-/**
+ * of_count_phandle_with_args() - Find the number of phandles references in a property
+ * @np: pointer to a device tree node containing a list
+ * @list_name: property name that contains a list
+--- a/include/linux/of.h
++++ b/include/linux/of.h
+@@ -363,18 +363,12 @@ extern const struct of_device_id *of_mat
+ const struct of_device_id *matches, const struct device_node *node);
+ extern int of_modalias_node(struct device_node *node, char *modalias, int len);
+ extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args);
+-extern struct device_node *of_parse_phandle(const struct device_node *np,
+- const char *phandle_name,
+- int index);
+-extern int of_parse_phandle_with_args(const struct device_node *np,
+- const char *list_name, const char *cells_name, int index,
+- struct of_phandle_args *out_args);
++extern int __of_parse_phandle_with_args(const struct device_node *np,
++ const char *list_name, const char *cells_name, int cell_count,
++ int index, struct of_phandle_args *out_args);
+ extern int of_parse_phandle_with_args_map(const struct device_node *np,
+ const char *list_name, const char *stem_name, int index,
+ struct of_phandle_args *out_args);
+-extern int of_parse_phandle_with_fixed_args(const struct device_node *np,
+- const char *list_name, int cells_count, int index,
+- struct of_phandle_args *out_args);
+ extern int of_count_phandle_with_args(const struct device_node *np,
+ const char *list_name, const char *cells_name);
+
+@@ -864,18 +858,12 @@ static inline int of_property_read_strin
+ return -ENOSYS;
+ }
+
+-static inline struct device_node *of_parse_phandle(const struct device_node *np,
+- const char *phandle_name,
+- int index)
+-{
+- return NULL;
+-}
+-
+-static inline int of_parse_phandle_with_args(const struct device_node *np,
+- const char *list_name,
+- const char *cells_name,
+- int index,
+- struct of_phandle_args *out_args)
++static inline int __of_parse_phandle_with_args(const struct device_node *np,
++ const char *list_name,
++ const char *cells_name,
++ int cell_count,
++ int index,
++ struct of_phandle_args *out_args)
+ {
+ return -ENOSYS;
+ }
+@@ -889,13 +877,6 @@ static inline int of_parse_phandle_with_
+ return -ENOSYS;
+ }
+
+-static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
+- const char *list_name, int cells_count, int index,
+- struct of_phandle_args *out_args)
+-{
+- return -ENOSYS;
+-}
+-
+ static inline int of_count_phandle_with_args(const struct device_node *np,
+ const char *list_name,
+ const char *cells_name)
+@@ -1077,6 +1058,117 @@ static inline bool of_node_is_type(const
+ }
+
+ /**
++ * of_parse_phandle - Resolve a phandle property to a device_node pointer
++ * @np: Pointer to device node holding phandle property
++ * @phandle_name: Name of property holding a phandle value
++ * @index: For properties holding a table of phandles, this is the index into
++ * the table
++ *
++ * Return: The device_node pointer with refcount incremented. Use
++ * of_node_put() on it when done.
++ */
++static inline struct device_node *of_parse_phandle(const struct device_node *np,
++ const char *phandle_name,
++ int index)
++{
++ struct of_phandle_args args;
++
++ if (__of_parse_phandle_with_args(np, phandle_name, NULL, 0,
++ index, &args))
++ return NULL;
++
++ return args.np;
++}
++
++/**
++ * of_parse_phandle_with_args() - Find a node pointed by phandle in a list
++ * @np: pointer to a device tree node containing a list
++ * @list_name: property name that contains a list
++ * @cells_name: property name that specifies phandles' arguments count
++ * @index: index of a phandle to parse out
++ * @out_args: optional pointer to output arguments structure (will be filled)
++ *
++ * This function is useful to parse lists of phandles and their arguments.
++ * Returns 0 on success and fills out_args, on error returns appropriate
++ * errno value.
++ *
++ * Caller is responsible to call of_node_put() on the returned out_args->np
++ * pointer.
++ *
++ * Example::
++ *
++ * phandle1: node1 {
++ * #list-cells = <2>;
++ * };
++ *
++ * phandle2: node2 {
++ * #list-cells = <1>;
++ * };
++ *
++ * node3 {
++ * list = <&phandle1 1 2 &phandle2 3>;
++ * };
++ *
++ * To get a device_node of the ``node2`` node you may call this:
++ * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args);
++ */
++static inline int of_parse_phandle_with_args(const struct device_node *np,
++ const char *list_name,
++ const char *cells_name,
++ int index,
++ struct of_phandle_args *out_args)
++{
++ int cell_count = -1;
++
++ /* If cells_name is NULL we assume a cell count of 0 */
++ if (!cells_name)
++ cell_count = 0;
++
++ return __of_parse_phandle_with_args(np, list_name, cells_name,
++ cell_count, index, out_args);
++}
++
++/**
++ * of_parse_phandle_with_fixed_args() - Find a node pointed by phandle in a list
++ * @np: pointer to a device tree node containing a list
++ * @list_name: property name that contains a list
++ * @cell_count: number of argument cells following the phandle
++ * @index: index of a phandle to parse out
++ * @out_args: optional pointer to output arguments structure (will be filled)
++ *
++ * This function is useful to parse lists of phandles and their arguments.
++ * Returns 0 on success and fills out_args, on error returns appropriate
++ * errno value.
++ *
++ * Caller is responsible to call of_node_put() on the returned out_args->np
++ * pointer.
++ *
++ * Example::
++ *
++ * phandle1: node1 {
++ * };
++ *
++ * phandle2: node2 {
++ * };
++ *
++ * node3 {
++ * list = <&phandle1 0 2 &phandle2 2 3>;
++ * };
++ *
++ * To get a device_node of the ``node2`` node you may call this:
++ * of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args);
++ */
++static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
++ const char *list_name,
++ int cell_count,
++ int index,
++ struct of_phandle_args *out_args)
++{
++ return __of_parse_phandle_with_args(np, list_name, NULL, cell_count,
++ index, out_args);
++}
++
++/**
+ * of_property_count_u8_elems - Count the number of u8 elements in a property
+ *
+ * @np: device node from which the property value is to be read.
--- /dev/null
+From 8eddceb280f5deb8046fcb660de9f9f683b408b9 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 6 Dec 2022 21:07:21 +0100
+Subject: [PATCH] of: base: add of_parse_phandle_with_optional_args()
+
+Add a new variant of the of_parse_phandle_with_args() which treats the
+cells name as optional. If it's missing, it is assumed that the phandle
+has no arguments.
+
+Up until now, a nvmem node didn't have any arguments, so all the device
+trees haven't any '#*-cells' property. But there is a need for an
+additional argument for the phandle, for which we need a '#*-cells'
+property. Therefore, we need to support nvmem nodes with and without
+this property.
+
+Signed-off-by: Michael Walle <michael@walle.cc>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+---
+ include/linux/of.h | 25 +++++++++++++++++++++++++
+ 1 file changed, 25 insertions(+)
+
+--- a/include/linux/of.h
++++ b/include/linux/of.h
+@@ -1169,6 +1169,31 @@ static inline int of_parse_phandle_with_
+ }
+
+ /**
++ * of_parse_phandle_with_optional_args() - Find a node pointed by phandle in a list
++ * @np: pointer to a device tree node containing a list
++ * @list_name: property name that contains a list
++ * @cells_name: property name that specifies phandles' arguments count
++ * @index: index of a phandle to parse out
++ * @out_args: optional pointer to output arguments structure (will be filled)
++ *
++ * Same as of_parse_phandle_with_args() except that if the cells_name property
++ * is not found, cell_count of 0 is assumed.
++ *
++ * This is used to useful, if you have a phandle which didn't have arguments
++ * before and thus doesn't have a '#*-cells' property but is now migrated to
++ * having arguments while retaining backwards compatibility.
++ */
++static inline int of_parse_phandle_with_optional_args(const struct device_node *np,
++ const char *list_name,
++ const char *cells_name,
++ int index,
++ struct of_phandle_args *out_args)
++{
++ return __of_parse_phandle_with_args(np, list_name, cells_name,
++ 0, index, out_args);
++}
++
++/**
+ * of_property_count_u8_elems - Count the number of u8 elements in a property
+ *
+ * @np: device node from which the property value is to be read.
--- /dev/null
+From 4f4145c9fee8c7a445dbbbadceccce5391e6b287 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 6 Dec 2022 21:07:22 +0100
+Subject: [PATCH] of: property: make #.*-cells optional for simple props
+
+Sometimes, future bindings for phandles will get additional arguments.
+Thus the target node of the phandle will need a new #.*-cells property.
+To be backwards compatible, this needs to be optional.
+
+Prepare the DEFINE_SIMPLE_PROPS() to handle the cells name as optional.
+
+Signed-off-by: Michael Walle <michael@walle.cc>
+Tested-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+---
+ drivers/of/property.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/of/property.c
++++ b/drivers/of/property.c
+@@ -1227,8 +1227,8 @@ static struct device_node *parse_suffix_
+ if (strcmp_suffix(prop_name, suffix))
+ return NULL;
+
+- if (of_parse_phandle_with_args(np, prop_name, cells_name, index,
+- &sup_args))
++ if (__of_parse_phandle_with_args(np, prop_name, cells_name, 0, index,
++ &sup_args))
+ return NULL;
+
+ return sup_args.np;
--- /dev/null
+From 9cf9486a6a7e8a3d76154d0c506051ba3740e8b6 Mon Sep 17 00:00:00 2001
+From: Michael Walle <michael@walle.cc>
+Date: Tue, 6 Dec 2022 21:07:23 +0100
+Subject: [PATCH] of: property: add #nvmem-cell-cells property
+
+Bindings describe the new '#nvmem-cell-cells' property. Now that the
+arguments count property is optional, we just add this property to the
+nvmem-cells.
+
+Signed-off-by: Michael Walle <michael@walle.cc>
+Tested-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+---
+ drivers/of/property.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/of/property.c
++++ b/drivers/of/property.c
+@@ -1276,7 +1276,7 @@ DEFINE_SIMPLE_PROP(dmas, "dmas", "#dma-c
+ DEFINE_SIMPLE_PROP(power_domains, "power-domains", "#power-domain-cells")
+ DEFINE_SIMPLE_PROP(hwlocks, "hwlocks", "#hwlock-cells")
+ DEFINE_SIMPLE_PROP(extcon, "extcon", NULL)
+-DEFINE_SIMPLE_PROP(nvmem_cells, "nvmem-cells", NULL)
++DEFINE_SIMPLE_PROP(nvmem_cells, "nvmem-cells", "#nvmem-cell-cells")
+ DEFINE_SIMPLE_PROP(phys, "phys", "#phy-cells")
+ DEFINE_SIMPLE_PROP(wakeup_parent, "wakeup-parent", NULL)
+ DEFINE_SIMPLE_PROP(pinctrl0, "pinctrl-0", NULL)
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
-@@ -1055,6 +1055,9 @@ int __init early_init_dt_scan_chosen(uns
+@@ -1054,6 +1054,9 @@ int __init early_init_dt_scan_chosen(uns
p = of_get_flat_dt_prop(node, "bootargs", &l);
if (p != NULL && l > 0)
strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
default ""
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
-@@ -1059,6 +1059,17 @@ int __init early_init_dt_scan_chosen(uns
+@@ -1058,6 +1058,17 @@ int __init early_init_dt_scan_chosen(uns
if (p != NULL && l > 0)
strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
help
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
-@@ -1059,6 +1059,17 @@ int __init early_init_dt_scan_chosen(uns
+@@ -1058,6 +1058,17 @@ int __init early_init_dt_scan_chosen(uns
if (p != NULL && l > 0)
strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
projects / openwrt / staging / dangole.git / commitdiff