--- /dev/null
+From ddeacc4f6494e07cbb6f033627926623f3e7a9d0 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 22 Jun 2021 07:24:15 +0200
+Subject: [PATCH] net: broadcom: bcm4908_enet: reset DMA rings sw indexes
+ properly
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Resetting software indexes in bcm4908_dma_alloc_buf_descs() is not
+enough as it's called during device probe only. Driver resets DMA on
+every .ndo_open callback and it's required to reset indexes then.
+
+This fixes inconsistent rings state and stalled traffic after interface
+down & up sequence.
+
+Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver")
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/bcm4908_enet.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/bcm4908_enet.c
++++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c
+@@ -174,9 +174,6 @@ static int bcm4908_dma_alloc_buf_descs(s
+ if (!ring->slots)
+ goto err_free_buf_descs;
+
+- ring->read_idx = 0;
+- ring->write_idx = 0;
+-
+ return 0;
+
+ err_free_buf_descs:
+@@ -303,6 +300,9 @@ static void bcm4908_enet_dma_ring_init(s
+
+ enet_write(enet, ring->st_ram_block + ENET_DMA_CH_STATE_RAM_BASE_DESC_PTR,
+ (uint32_t)ring->dma_addr);
++
++ ring->read_idx = 0;
++ ring->write_idx = 0;
+ }
+
+ static void bcm4908_enet_dma_uninit(struct bcm4908_enet *enet)
--- /dev/null
+From e93a766da57fff3273bcb618edf5dfca1fb86b89 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Thu, 15 Sep 2022 15:30:13 +0200
+Subject: [PATCH] net: broadcom: bcm4908_enet: handle -EPROBE_DEFER when
+ getting MAC
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Reading MAC from OF may return -EPROBE_DEFER if underlaying NVMEM device
+isn't ready yet. In such case pass that error code up and "wait" to be
+probed later.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Link: https://lore.kernel.org/r/20220915133013.2243-1-zajec5@gmail.com
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ drivers/net/ethernet/broadcom/bcm4908_enet.c | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/bcm4908_enet.c
++++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c
+@@ -716,10 +716,14 @@ static int bcm4908_enet_probe(struct pla
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+ mac = of_get_mac_address(dev->of_node);
+- if (!IS_ERR(mac))
++ if (!IS_ERR(mac)) {
+ ether_addr_copy(netdev->dev_addr, mac);
+- else
++ } else if (PTR_ERR(mac) == -EPROBE_DEFER) {
++ err = -EPROBE_DEFER;
++ goto err_dma_free;
++ } else {
+ eth_hw_addr_random(netdev);
++ }
+ netdev->netdev_ops = &bcm4908_enet_netdev_ops;
+ netdev->min_mtu = ETH_ZLEN;
+ netdev->mtu = ETH_DATA_LEN;
+@@ -728,14 +732,17 @@ static int bcm4908_enet_probe(struct pla
+ netif_napi_add(netdev, &enet->rx_ring.napi, bcm4908_enet_poll_rx, NAPI_POLL_WEIGHT);
+
+ err = register_netdev(netdev);
+- if (err) {
+- bcm4908_enet_dma_free(enet);
+- return err;
+- }
++ if (err)
++ goto err_dma_free;
+
+ platform_set_drvdata(pdev, enet);
+
+ return 0;
++
++err_dma_free:
++ bcm4908_enet_dma_free(enet);
++
++ return err;
+ }
+
+ static int bcm4908_enet_remove(struct platform_device *pdev)
+++ /dev/null
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
-Date: Tue, 22 Jun 2021 07:05:04 +0200
-Subject: [PATCH] net: broadcom: bcm4908_enet: reset DMA rings sw indexes
- properly
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Resetting software indexes in bcm4908_dma_alloc_buf_descs() is not
-enough as it's called during device probe only. Driver resets DMA on
-every .ndo_open callback and it's required to reset indexes then.
-
-This fixes inconsistent rings state and stalled traffic after interface
-down & up sequence.
-
-Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver")
-Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
----
- drivers/net/ethernet/broadcom/bcm4908_enet.c | 6 +++---
- 1 file changed, 3 insertions(+), 3 deletions(-)
-
---- a/drivers/net/ethernet/broadcom/bcm4908_enet.c
-+++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c
-@@ -174,9 +174,6 @@ static int bcm4908_dma_alloc_buf_descs(s
- if (!ring->slots)
- goto err_free_buf_descs;
-
-- ring->read_idx = 0;
-- ring->write_idx = 0;
--
- return 0;
-
- err_free_buf_descs:
-@@ -303,6 +300,9 @@ static void bcm4908_enet_dma_ring_init(s
-
- enet_write(enet, ring->st_ram_block + ENET_DMA_CH_STATE_RAM_BASE_DESC_PTR,
- (uint32_t)ring->dma_addr);
-+
-+ ring->read_idx = 0;
-+ ring->write_idx = 0;
- }
-
- static void bcm4908_enet_dma_uninit(struct bcm4908_enet *enet)
projects / openwrt / staging / pepe2k.git / commitdiff