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authorColin Cross <ccross@android.com>2011-07-11 10:51:49 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2011-07-11 10:51:49 +0200
commit887596224cca4dc4669c53e4d7a33fcfc9d9e823 (patch)
tree51cf1ce6f98ddf3e304c06b45c28265dfc9e4503
parente3bbfa78bab125f58b831b5f7f45b5a305091d72 (diff)
downloadlinux-linaro-887596224cca4dc4669c53e4d7a33fcfc9d9e823.tar.gz
PM: Reintroduce dropped call to check_wakeup_irqs
Patch 2e711c04dbbf7a7732a3f7073b1fc285d12b369d (PM: Remove sysdev suspend, resume and shutdown operations) deleted sysdev_suspend(), which was being relied on to call check_wakeup_irqs() in suspend. If check_wakeup_irqs() is not called, wake interrupts that are pending when suspend is entered may be lost. It also breaks IRQCHIP_MASK_ON_SUSPEND, which is handled in check_wakeup_irqs(). This patch adds a call to check_wakeup_irqs() in syscore_suspend(), similar to what was deleted in sysdev_suspend(). Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
-rw-r--r--drivers/base/syscore.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
index c126db3cb7d..e8d11b6630e 100644
--- a/drivers/base/syscore.c
+++ b/drivers/base/syscore.c
@@ -9,6 +9,7 @@
#include <linux/syscore_ops.h>
#include <linux/mutex.h>
#include <linux/module.h>
+#include <linux/interrupt.h>
static LIST_HEAD(syscore_ops_list);
static DEFINE_MUTEX(syscore_ops_lock);
@@ -48,6 +49,13 @@ int syscore_suspend(void)
struct syscore_ops *ops;
int ret = 0;
+ pr_debug("Checking wakeup interrupts\n");
+
+ /* Return error code if there are any wakeup interrupts pending. */
+ ret = check_wakeup_irqs();
+ if (ret)
+ return ret;
+
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled before system core suspend.\n");