From 042fb8eb57bfb7aba295831579a4f48c11d642f0 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Mon, 28 Jul 2014 11:12:25 +0000 Subject: [PATCH] brcm63xx: 3.14: fix ath9k_pci_fixup Since kernel commit 928bea964827 ("PCI: Delay enabling bridges until they're needed"), pci fixups are run with bridges (e.g. the pcie port) disabled. This causses hangs when ath9k_pci_fixup tries to manually enable the device to apply the register fixups. Fix this by enabling any parent bridges before trying to access the device itself. Fixes boot on DSL-274XB rev F1. Reported-by: Matteo Croce Signed-off-by: Jonas Gorski SVN-Revision: 41856 --- .../416-BCM63XX-add-a-fixup-for-ath9k-devices.patch | 9 ++++++++- .../420-BCM63XX-add-endian-check-for-ath9k.patch | 2 +- .../patches-3.14/421-BCM63XX-add-led-pin-for-ath9k.patch | 2 +- 3 files changed, 10 insertions(+), 3 deletions(-) diff --git a/target/linux/brcm63xx/patches-3.14/416-BCM63XX-add-a-fixup-for-ath9k-devices.patch b/target/linux/brcm63xx/patches-3.14/416-BCM63XX-add-a-fixup-for-ath9k-devices.patch index af06428565..23f16ad8e8 100644 --- a/target/linux/brcm63xx/patches-3.14/416-BCM63XX-add-a-fixup-for-ath9k-devices.patch +++ b/target/linux/brcm63xx/patches-3.14/416-BCM63XX-add-a-fixup-for-ath9k-devices.patch @@ -24,7 +24,7 @@ Subject: [PATCH 61/72] BCM63XX: add a fixup for ath9k devices obj-y += boards/ --- /dev/null +++ b/arch/mips/bcm63xx/pci-ath9k-fixup.c -@@ -0,0 +1,192 @@ +@@ -0,0 +1,199 @@ +/* + * Broadcom BCM63XX Ath9k EEPROM fixup helper. + * @@ -117,6 +117,7 @@ Subject: [PATCH 61/72] BCM63XX: add a fixup for ath9k devices +{ + void __iomem *mem; + struct ath9k_platform_data *pdata = NULL; ++ struct pci_dev *bridge = pci_upstream_bridge(dev); + u16 *cal_data = NULL; + u16 cmd; + u32 bar0; @@ -161,6 +162,9 @@ Subject: [PATCH 61/72] BCM63XX: add a fixup for ath9k devices + return; + } + ++ if (bridge) ++ pci_enable_device(bridge); ++ + pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0); + pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, val); @@ -195,6 +199,9 @@ Subject: [PATCH 61/72] BCM63XX: add a fixup for ath9k devices + + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, bar0); + ++ if (bridge) ++ pci_disable_device(bridge); ++ + iounmap(mem); + + dev->dev.platform_data = pdata; diff --git a/target/linux/brcm63xx/patches-3.14/420-BCM63XX-add-endian-check-for-ath9k.patch b/target/linux/brcm63xx/patches-3.14/420-BCM63XX-add-endian-check-for-ath9k.patch index 0809d785bd..24b91bbb56 100644 --- a/target/linux/brcm63xx/patches-3.14/420-BCM63XX-add-endian-check-for-ath9k.patch +++ b/target/linux/brcm63xx/patches-3.14/420-BCM63XX-add-endian-check-for-ath9k.patch @@ -21,7 +21,7 @@ /* --- a/arch/mips/bcm63xx/pci-ath9k-fixup.c +++ b/arch/mips/bcm63xx/pci-ath9k-fixup.c -@@ -174,12 +174,14 @@ static void ath9k_pci_fixup(struct pci_d +@@ -181,12 +181,14 @@ static void ath9k_pci_fixup(struct pci_d } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ath9k_pci_fixup); diff --git a/target/linux/brcm63xx/patches-3.14/421-BCM63XX-add-led-pin-for-ath9k.patch b/target/linux/brcm63xx/patches-3.14/421-BCM63XX-add-led-pin-for-ath9k.patch index 0d4f761308..f10e10a8d1 100644 --- a/target/linux/brcm63xx/patches-3.14/421-BCM63XX-add-led-pin-for-ath9k.patch +++ b/target/linux/brcm63xx/patches-3.14/421-BCM63XX-add-led-pin-for-ath9k.patch @@ -11,7 +11,7 @@ } --- a/arch/mips/bcm63xx/pci-ath9k-fixup.c +++ b/arch/mips/bcm63xx/pci-ath9k-fixup.c -@@ -175,13 +175,14 @@ static void ath9k_pci_fixup(struct pci_d +@@ -182,13 +182,14 @@ static void ath9k_pci_fixup(struct pci_d DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ath9k_pci_fixup); void __init pci_enable_ath9k_fixup(unsigned slot, u32 offset, -- 2.30.2