[ARM] Fix "apm -s" command hang
Fix an apparant hang with the "apm -s" command. We omitted to wake up
this process once resume had completed.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/apm.c b/arch/arm/kernel/apm.c
index bbe98e3..845af0b 100644
--- a/arch/arm/kernel/apm.c
+++ b/arch/arm/kernel/apm.c
@@ -340,6 +340,7 @@
wait_event(apm_suspend_waitqueue,
as->suspend_state == SUSPEND_DONE);
} else {
+ as->suspend_state = SUSPEND_WAIT;
up(&state_lock);
/*
@@ -349,8 +350,14 @@
* acknowledged.
*/
err = queue_suspend_event(APM_USER_SUSPEND, as);
- if (err < 0)
+ if (err < 0) {
+ /*
+ * Avoid taking the lock here - this
+ * should be fine.
+ */
+ as->suspend_state = SUSPEND_NONE;
break;
+ }
if (err > 0)
apm_suspend();