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| author | Abhilash Kesavan <a.kesavan@samsung.com> | 2013-01-25 10:40:19 -0800 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2013-01-30 22:28:05 -0800 |
| commit | d3fcacf52d24ff1b12d994d9ddb7496f651294a2 (patch) | |
| tree | 551b22ecd840f7ad76d0f057de2db1d1c8be1437 /arch/arm/mach-s5p64x0 | |
| parent | 8baaa265c5e8e378cb60164f47e24bf296a6d685 (diff) | |
| download | linux-d3fcacf52d24ff1b12d994d9ddb7496f651294a2.tar.gz linux-d3fcacf52d24ff1b12d994d9ddb7496f651294a2.tar.bz2 linux-d3fcacf52d24ff1b12d994d9ddb7496f651294a2.zip | |
ARM: SAMSUNG: Gracefully exit on suspend failure
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: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-s5p64x0')
| -rw-r--r-- | arch/arm/mach-s5p64x0/pm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mach-s5p64x0/pm.c b/arch/arm/mach-s5p64x0/pm.c index 9cba18bfe47b..97c2a08ad490 100644 --- a/arch/arm/mach-s5p64x0/pm.c +++ b/arch/arm/mach-s5p64x0/pm.c @@ -103,8 +103,8 @@ static int s5p64x0_cpu_suspend(unsigned long arg) "mcr p15, 0, %0, c7, c10, 4\n\t" "mcr p15, 0, %0, c7, c0, 4" : : "r" (tmp)); - /* we should never get past here */ - panic("sleep resumed to originator?"); + pr_info("Failed to suspend the system\n"); + return 1; /* Aborting suspend */ } /* mapping of interrupts to parts of the wakeup mask */ |