• Shawn Guo's avatar
    ASoC: wm8962: fix NULL pdata pointer · 4642aabd
    Shawn Guo authored
    There is an error in merge commit 384b8345 on conflict resolution which
    causes the following NULL pdata pointer bug.
    
    wm8962 0-001a: customer id 0 revision D
    Unable to handle kernel NULL pointer dereference at virtual address 00000004
    pgd = 80004000
    [00000004] *pgd=00000000
    Internal error: Oops: 5 [#1] SMP ARM
    Modules linked in:
    CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.0+ #1
    task: bf870000 ti: bf874000 task.ti: bf874000
    PC is at wm8962_probe+0x134/0x6c8
    LR is at regmap_unlock_mutex+0x10/0x14
    pc : [<80452100>]    lr : [<80304cf4>]    psr: a0000113
    sp : bf875c98  ip : 00000000  fp : bf875cd4
    r10: 00000000  r9 : bfb1830c  r8 : 80779bc4
    r7 : 00000000  r6 : 00000001  r5 : bfbac010  r4 : bfb33e00
    r3 : 80304ce4  r2 : 00000000  r1 : 00000001  r0 : fffffffb
    Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
    Control: 10c53c7d  Table: 1000404a  DAC: 00000017
    Process swapper/0 (pid: 1, stack limit = 0xbf874238)
    Stack: (0xbf875c98 to 0xbf876000)
    ...
    
    Fix the error by assigning pdata a correct pointer.
    Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
    Signed-off-by: default avatarMark Brown <broonie@linaro.org>
    4642aabd
wm8962.c 117 KB