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>
diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
index c126db3..e8d11b6 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 @@
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");