openwrtv3/target/linux/brcm63xx/patches-3.14/420-BCM63XX-add-endian-check-for-ath9k.patch
Jonas Gorski 042fb8eb57 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 <matteo@openwrt.org>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 41856
2014-07-28 11:12:25 +00:00

51 lines
1.7 KiB
Diff

--- a/arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
+++ b/arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
@@ -2,6 +2,7 @@
#define _PCI_ATH9K_FIXUP
-void pci_enable_ath9k_fixup(unsigned slot, u32 offset) __init;
+void pci_enable_ath9k_fixup(unsigned slot, u32 offset,
+ unsigned endian_check) __init;
#endif /* _PCI_ATH9K_FIXUP */
--- a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
+++ b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
@@ -19,6 +19,7 @@
struct ath9k_caldata {
unsigned int slot;
u32 caldata_offset;
+ unsigned int endian_check:1;
};
/*
--- a/arch/mips/bcm63xx/pci-ath9k-fixup.c
+++ b/arch/mips/bcm63xx/pci-ath9k-fixup.c
@@ -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);
-void __init pci_enable_ath9k_fixup(unsigned slot, u32 offset)
+void __init pci_enable_ath9k_fixup(unsigned slot, u32 offset,
+ unsigned endian_check)
{
if (ath9k_num_fixups >= ARRAY_SIZE(ath9k_fixups))
return;
ath9k_fixups[ath9k_num_fixups].slot = slot;
+ ath9k_fixups[ath9k_num_fixups].pdata.endian_check = endian_check;
if (!bcm63xx_read_eeprom(ath9k_fixups[ath9k_num_fixups].pdata.eeprom_data, offset))
return;
--- a/arch/mips/bcm63xx/boards/board_common.c
+++ b/arch/mips/bcm63xx/boards/board_common.c
@@ -294,7 +294,8 @@ int __init board_register_devices(void)
/* register any fixups */
for (i = 0; i < board.has_caldata; i++)
- pci_enable_ath9k_fixup(board.caldata[i].slot, board.caldata[i].caldata_offset);
+ pci_enable_ath9k_fixup(board.caldata[i].slot, board.caldata[i].caldata_offset,
+ board.caldata[i].endian_check);
return 0;
}