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brcm63xx: 3.14: fix ath9k_pci_fixup

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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 <matteo@openwrt.org>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 41856
This commit is contained in:
Jonas Gorski 2014-07-28 11:12:25 +00:00
parent fd619513d1
commit 042fb8eb57
3 changed files with 10 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
target/linux/brcm63xx/patches-3.14/416-BCM63XX-add-a-fixup-for-ath9k-devices.patch
View File

@ -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;

2
target/linux/brcm63xx/patches-3.14/420-BCM63XX-add-endian-check-for-ath9k.patch
View File

@ -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);

2
target/linux/brcm63xx/patches-3.14/421-BCM63XX-add-led-pin-for-ath9k.patch
View File

@ -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,