Gabor Juhos 6015a856f1 MIPS: ath79: add a workaround for a PCI controller bug in AR7240 SoCs ... The PCI controller of the AR724X SoCs has a hardware bag. If the BAR0 register of the PCI device is set to the proper base address, the memory address space of the device is not accessible. When the device driver tries to access the memory address space of the PCI device, it leads to data bus error, similiar to this: Data bus error, epc == 801f69a0, ra == 801f698c Oops[#1]: Cpu 0 $ 0 : 00000000 00000061 deadbeef 000000ff $ 4 : 00000000 000000ff 00000014 00000000 $ 8 : ff000000 fffffffc 00000000 00000000 $12 : 000001f5 00000006 00000000 6e637920 $16 : 81ca4000 81ca0260 81ca4000 804d70f0 $20 : fffffff4 0000002b 803ad4c4 00000000 $24 : 00000003 00000000 $28 : 81c20000 81c21c60 00000000 801f698c Hi : 00000000 Lo : 00000000 epc : 801f69a0 ath9k_hw_init+0xd0/0xa70 Not tainted ra : 801f698c ath9k_hw_init+0xbc/0xa70 Status: 1000c103 KERNEL EXL IE Cause : 1080001c PrId : 00019374 (MIPS 24Kc) Modules linked in: Process swapper (pid: 1, threadinfo=81c20000, task=81c18000, tls=00000000) Stack : 00000000 00000000 00000000 00000000 81c21c78 81ca0260 00000000 804d70f0 81ca0260 81c21cc0 81ca0e80 81ca0260 81ca4000 804d70f0 fffffff4 0000002b 803ad4c4 00000000 00000000 801e3ae8 81c9d080 81ca0e80 b0000000 800b9b9c 00000008 81c9d000 8031aeb0 802d38a0 00000000 81c14c00 81c14c60 00000000 81ca0e80 81ca0260 b0000000 801f08a4 81c9c820 81c21d48 81c9c820 80144320 ... Call Trace: [<801f69a0>] ath9k_hw_init+0xd0/0xa70 [<801e3ae8>] ath9k_init_device+0x174/0x680 [<801f08a4>] ath_pci_probe+0x27c/0x380 [<8019e490>] pci_device_probe+0x74/0x9c [<801bfadc>] driver_probe_device+0x9c/0x1b4 [<801bfcb0>] __driver_attach+0xbc/0xc4 [<801bea0c>] bus_for_each_dev+0x5c/0x98 [<801bf394>] bus_add_driver+0x1d0/0x2a4 [<801c0364>] driver_register+0x8c/0x16c [<8019e72c>] __pci_register_driver+0x4c/0xe4 [<803d3d40>] ath9k_init+0x3c/0x88 [<80060930>] do_one_initcall+0x3c/0x1cc [<803c297c>] kernel_init+0xa4/0x138 [<80063c04>] kernel_thread_helper+0x10/0x18 Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3494/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>		2012-05-15 17:49:03 +02:00
..
alpha	alpha: silence 'const' warning in sys_marvel.c	2012-05-02 15:54:06 -04:00
arm	ARM: SoC fixes for 3.4-rc	2012-05-12 17:27:41 -07:00
avr32	avr32: fix nop compile fails from system.h split up	2012-04-04 08:23:44 -07:00
blackfin	blackfin: fix ifdef fustercluck in mach-bf538/boards/ezkit.c	2012-04-26 14:46:51 -04:00
c6x	irq: Kill pointless irqd_to_hw export	2012-04-10 22:39:17 -06:00
cris	Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:12:23 -07:00
frv	frv: fix warnings in mb93090-mb00/pci-dma.c about implicit EXPORT_SYMBOL	2012-04-02 14:41:26 -07:00
h8300	Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:12:23 -07:00
hexagon	hexagon: add missing cpu.h include	2012-04-23 12:57:24 -05:00
ia64	KVM: ia64: fix build due to typo	2012-05-09 13:53:28 +03:00
m32r	Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:12:23 -07:00
m68k	m68knommu: enable qspi support when SPI_COLDFIRE_QSPI = m	2012-05-08 13:06:51 +10:00
microblaze	Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping	2012-04-04 17:13:43 -07:00
mips	MIPS: ath79: add a workaround for a PCI controller bug in AR7240 SoCs	2012-05-15 17:49:03 +02:00
mn10300	Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-29 18:12:23 -07:00
openrisc	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
parisc	parisc: move definition of PAGE0 to asm/page.h	2012-05-10 15:12:08 -07:00
powerpc	powerpc/irq: Fix another case of lazy IRQ state getting out of sync	2012-05-12 09:40:41 +10:00
s390	[S390] Fix compile error in swab.h	2012-04-11 14:28:26 +02:00
score	Delete all instances of asm/system.h	2012-03-28 18:30:03 +01:00
sh	sh: Fix up tracepoint build fallout from static key introduction.	2012-04-27 11:12:38 +09:30
sparc	sparc64: Do not clobber %g2 in xcall_fetch_glob_regs().	2012-05-10 11:00:46 -07:00
tile	arch/tile: fix a couple of functions that should be __init	2012-04-25 12:45:26 -04:00
um	um: uml_setup_stubs': warning: unused variable 'pages'	2012-04-10 00:13:45 +02:00
unicore32	Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping	2012-04-04 17:13:43 -07:00
x86	Merge git://git.kernel.org/pub/scm/virt/kvm/kvm	2012-05-09 11:14:13 -07:00
xtensa	xtensa: fix build fail on undefined ack_bad_irq	2012-04-26 18:35:32 -04:00
.gitignore	…
Kconfig	Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile	2012-03-29 14:49:45 -07:00