diff options
| author | Ben Dooks <ben-linux@fluff.org> | 2007-12-23 03:09:34 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-01-28 13:20:50 +0000 |
| commit | 332349518f1958b0bc1ae3febc2e4f75f214d255 (patch) | |
| tree | 5bbf5aa0c1ab02dbee30fdf46d0043dfc52a5ce3 /arch/arm/mach-s3c2412/pm.c | |
| parent | 0baada2742a42390a2ebed09e07e1fab518db884 (diff) | |
[ARM] 4731/1: S3C2412: Check for incomplete sleep
Check if the sleep command returns due to a pending interrupt
in the standby unit. If this happens, try and ack the IRQ
before re-trying the resume.
It is currently unclear whether the resume can be backed out
of at this stage as this could cause a problem with level
based interrupts.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-s3c2412/pm.c')
| -rw-r--r-- | arch/arm/mach-s3c2412/pm.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/arch/arm/mach-s3c2412/pm.c b/arch/arm/mach-s3c2412/pm.c index 974ffb130479..d4ffb2d98076 100644 --- a/arch/arm/mach-s3c2412/pm.c +++ b/arch/arm/mach-s3c2412/pm.c @@ -33,6 +33,8 @@ #include <asm/plat-s3c24xx/s3c2412.h> +extern void s3c2412_sleep_enter(void); + static void s3c2412_cpu_suspend(void) { unsigned long tmp; @@ -43,20 +45,7 @@ static void s3c2412_cpu_suspend(void) tmp |= S3C2412_PWRCFG_STANDBYWFI_SLEEP; __raw_writel(tmp, S3C2412_PWRCFG); - /* issue the standby signal into the pm unit. Note, we - * issue a write-buffer drain just in case */ - - tmp = 0; - - asm("b 1f\n\t" - ".align 5\n\t" - "1:\n\t" - "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?"); + s3c2412_sleep_enter(); } static void s3c2412_pm_prepare(void) |