• Abhilash Kesavan's avatar
    ARM: SAMSUNG: Gracefully exit on suspend failure · d3fcacf5
    Abhilash Kesavan authored
    As per the Exynos5250 User Manual:
    When there are pending interrupt events, WFI/WFE instruction are
    ignored. To cancel the power-down sequence follow these steps:
    1) Disable system power-down using CENTRAL_SEQ_CONFIGURATION register
    2) Clear WAKEUP_STAT register
    3) Enable interrupt service routine for CPU
    
    Code for early wakeup for exynos already exists. Remove the panic
    on suspend failure, clear the wakeup state register and return 1
    from cpu_suspend to indicate a failed suspend (to a user daemon).
    
    Older Samsung SoCs have similar panics and I have removed them all.
    Haven't touched the S3C2410 sleep code.
    Signed-off-by: default avatarAbhilash Kesavan <a.kesavan@samsung.com>
    Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
    d3fcacf5
pm-s3c2412.c 2.72 KB