1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index a4c33bc51257..81d344e0e95d 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -73,6 +73,8 @@
  *      device are known to the PM core.  However, for some devices this
  *      attribute is set to "enabled" by bus type code or device drivers and in
  *      that cases it should be safe to leave the default value.
+ *
+ *      wakeup_count - Report the number of wakeup events related to the device
  */
 
 static const char enabled[] = "enabled";
@@ -144,6 +146,16 @@ wake_store(struct device * dev, struct device_attribute *attr,
 
 static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store);
 
+#ifdef CONFIG_PM_SLEEP
+static ssize_t wakeup_count_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        return sprintf(buf, "%lu\n", dev->power.wakeup_count);
+}
+
+static DEVICE_ATTR(wakeup_count, 0444, wakeup_count_show, NULL);
+#endif
+
 #ifdef CONFIG_PM_ADVANCED_DEBUG
 #ifdef CONFIG_PM_RUNTIME
 
@@ -230,6 +242,9 @@ static struct attribute * power_attrs[] = {
         &dev_attr_control.attr,
 #endif
         &dev_attr_wakeup.attr,
+#ifdef CONFIG_PM_SLEEP
+        &dev_attr_wakeup_count.attr,
+#endif
 #ifdef CONFIG_PM_ADVANCED_DEBUG
         &dev_attr_async.attr,
 #ifdef CONFIG_PM_RUNTIME