• Vegard Nossum's avatar
    ACPI: don't walk tables if ACPI was disabled · 4389ed2f
    Vegard Nossum authored
    Ingo Molnar wrote:
    > -tip auto-testing started triggering this spinlock corruption message
    > yesterday:
    >
    > [    3.976213] calling  acpi_rtc_init+0x0/0xd3
    > [    3.980213] ACPI Exception (utmutex-0263): AE_BAD_PARAMETER, Thread F7C50000 could not acquire Mutex [3] [20080321]
    > [    3.992213] BUG: spinlock bad magic on CPU#0, swapper/1
    > [    3.992213]  lock: c2508dc4, .magic: 00000000, .owner: swapper/1, .owner_cpu: 0
    
    This is apparently because some parts of ACPI, including mutexes, are not
    initialized when acpi=off is passed to the kernel.
    Reported-by: default avatarIngo Molnar <mingo@elte.hu>
    Signed-off-by: default avatarVegard Nossum <vegard.nossum@gmail.com>
    Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    4389ed2f
glue.c 8.69 KB