summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-s3c2412
diff options
context:
space:
mode:
authorRussell King <rmk+kernel@arm.linux.org.uk>2011-07-02 09:54:01 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-07-02 09:54:01 +0100
commit29cb3cd208dd0e4471bb80bec4facc49ceb199fa (patch)
tree035128bf7af997d5e1e5208c900ba78c5a1df46d /arch/arm/mach-s3c2412
parentcbe263497def23befb6f475977661bae5d1f82e4 (diff)
downloadop-kernel-dev-29cb3cd208dd0e4471bb80bec4facc49ceb199fa.zip
op-kernel-dev-29cb3cd208dd0e4471bb80bec4facc49ceb199fa.tar.gz
ARM: pm: allow suspend finisher to return error codes
There are SoCs where attempting to enter a low power state is ignored, and the CPU continues executing instructions with all state preserved. It is over-complex at that point to disable the MMU just to call the resume path. Instead, allow the suspend finisher to return error codes to abort suspend in this circumstance, where the cpu_suspend internals will then unwind the saved state on the stack. Also omit the tlb flush as no changes to the page tables will have happened. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-s3c2412')
-rw-r--r--arch/arm/mach-s3c2412/pm.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/mach-s3c2412/pm.c b/arch/arm/mach-s3c2412/pm.c
index 9a1fb89..f4077ef 100644
--- a/arch/arm/mach-s3c2412/pm.c
+++ b/arch/arm/mach-s3c2412/pm.c
@@ -37,7 +37,7 @@
extern void s3c2412_sleep_enter(void);
-static void s3c2412_cpu_suspend(unsigned long arg)
+static int s3c2412_cpu_suspend(unsigned long arg)
{
unsigned long tmp;
@@ -48,6 +48,8 @@ static void s3c2412_cpu_suspend(unsigned long arg)
__raw_writel(tmp, S3C2412_PWRCFG);
s3c2412_sleep_enter();
+
+ panic("sleep resumed to originator?");
}
static void s3c2412_pm_prepare(void)
OpenPOWER on IntegriCloud