Christophe Leroy 41017a7579 powerpc: sysdev: cpm: fix gpio save_regs functions ... of_mm_gpiochip_add_data() calls mm_gc->save_regs() before setting the data. Therefore ->save_regs() cannot use gpiochip_get_data() [ 0.275940] Unable to handle kernel paging request for data at address 0x00000130 [ 0.283120] Faulting instruction address: 0xc01b44cc [ 0.288175] Oops: Kernel access of bad area, sig: 11 [#1] [ 0.293343] PREEMPT CMPC885 [ 0.296141] CPU: 0 PID: 1 Comm: swapper Not tainted 4.7.0-g65124df-dirty #68 [ 0.304131] task: c6074000 ti: c6080000 task.ti: c6080000 [ 0.309459] NIP: c01b44cc LR: c0011720 CTR: c0011708 [ 0.314372] REGS: c6081d90 TRAP: 0300 Not tainted (4.7.0-g65124df-dirty) [ 0.322267] MSR: 00009032 <EE,ME,IR,DR,RI> CR: 24000028 XER: 20000000 [ 0.328813] DAR: 00000130 DSISR: c0000000 GPR00: c01b6d0c c6081e40 c6074000 c6017000 c9028000 c601d028 c6081dd8 00000000 GPR08: c601d028 00000000 ffffffff 00000001 24000044 00000000 c0002790 00000000 GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 c05643b0 00000083 GPR24: c04a1a6c c0560000 c04a8308 c04c6480 c0012498 c6017000 c7ffcc78 c6017000 [ 0.360806] NIP [c01b44cc] gpiochip_get_data+0x4/0xc [ 0.365684] LR [c0011720] cpm1_gpio16_save_regs+0x18/0x44 [ 0.370972] Call Trace: [ 0.373451] [c6081e50] [c01b6d0c] of_mm_gpiochip_add_data+0x70/0xdc [ 0.379624] [c6081e70] [c00124c0] cpm_init_par_io+0x28/0x118 [ 0.385238] [c6081e80] [c04a8ac0] do_one_initcall+0xb0/0x17c [ 0.390819] [c6081ef0] [c04a8cbc] kernel_init_freeable+0x130/0x1dc [ 0.396924] [c6081f30] [c00027a4] kernel_init+0x14/0x110 [ 0.402177] [c6081f40] [c000b424] ret_from_kernel_thread+0x5c/0x64 [ 0.408233] Instruction dump: [ 0.411168] 4182fafc 3f80c040 48234c6d 3bc0fff0 3b9c5ed0 4bfffaf4 81290020 712a0004 [ 0.418825] 4182fb34 48234c51 4bfffb2c 81230004 <80690130> 4e800020 7c0802a6 9421ffe0 [ 0.426763] ---[ end trace fe4113ee21d72ffa ]--- fixes: e65078f1f3 ("powerpc: sysdev: cpm1: use gpiochip data pointer") fixes: a14a2d484b ("powerpc: cpm_common: use gpiochip data pointer") Cc: stable@vger.kernel.org Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2016-08-22 11:09:33 +10:00
..
boot	Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2016-08-02 16:37:12 -04:00
configs	powerpc updates for 4.8 # 1	2016-07-30 21:01:36 -07:00
crypto	crypto: crc32c-vpmsum - Convert to CPU feature based module autoloading	2016-08-09 14:50:17 +10:00
include	powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb)	2016-08-22 11:09:33 +10:00
kernel	powerpc/pseries: PACA save area fix for MCE vs MCE	2016-08-22 11:09:33 +10:00
kvm	KVM: Protect device ops->create and list_add with kvm->lock	2016-08-12 12:01:27 +02:00
lib	powerpc/32: Fix crash during static key init	2016-08-10 19:41:58 +10:00
math-emu	…
mm	powerpc: migrate exception table users off module.h and onto extable.h	2016-08-22 11:09:33 +10:00
net	powerpc/ebpf/jit: Implement JIT compiler for extended BPF	2016-06-24 15:17:57 +10:00
oprofile	powerpc: Various typo fixes	2016-06-14 13:58:26 +10:00
perf	powerpc/perf: Fix incorrect event codes in power9-event-list	2016-08-04 20:22:34 +10:00
platforms	powerpc: migrate exception table users off module.h and onto extable.h	2016-08-22 11:09:33 +10:00
scripts	powerpc/ftrace: Add Kconfig & Make glue for mprofile-kernel	2016-03-07 14:53:56 +11:00
sysdev	powerpc: sysdev: cpm: fix gpio save_regs functions	2016-08-22 11:09:33 +10:00
xmon	powerpc: Move cpu_has_feature() to a separate file	2016-08-01 11:15:03 +10:00
Kconfig	Implements HARDENED_USERCOPY verification of copy_to_user/copy_from_user	2016-08-08 14:48:14 -07:00
Kconfig.debug	powerpc/mm: Catch usage of cpu/mmu_has_feature() before jump label init	2016-08-01 11:15:06 +10:00
Makefile	powerpc/Makefile: Use cflags-y/aflags-y for setting endian options	2016-08-10 23:01:53 +10:00
relocs_check.sh	powerpc: Convert relocs_check to a shell script using grep	2015-03-23 14:47:39 +11:00