diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index 46118f845948..dd9dfa15e9d1 100644
--- a/drivers/char/apm-emulation.c
+++ b/drivers/char/apm-emulation.c
@@ -531,6 +531,7 @@ static int apm_suspend_notifier(struct notifier_block *nb,
 {
 	struct apm_user *as;
 	int err;
+	unsigned long apm_event;
 
 	/* short-cut emergency suspends */
 	if (atomic_read(&userspace_notification_inhibit))
@@ -538,6 +539,9 @@ static int apm_suspend_notifier(struct notifier_block *nb,
 
 	switch (event) {
 	case PM_SUSPEND_PREPARE:
+	case PM_HIBERNATION_PREPARE:
+		apm_event = (event == PM_SUSPEND_PREPARE) ?
+			APM_USER_SUSPEND : APM_USER_HIBERNATION;
 		/*
 		 * Queue an event to all "writer" users that we want
 		 * to suspend and need their ack.
@@ -550,7 +554,7 @@ static int apm_suspend_notifier(struct notifier_block *nb,
 			    as->writer && as->suser) {
 				as->suspend_state = SUSPEND_PENDING;
 				atomic_inc(&suspend_acks_pending);
-				queue_add_event(&as->queue, APM_USER_SUSPEND);
+				queue_add_event(&as->queue, apm_event);
 			}
 		}
 
@@ -601,11 +605,14 @@ static int apm_suspend_notifier(struct notifier_block *nb,
 		return notifier_from_errno(err);
 
 	case PM_POST_SUSPEND:
+	case PM_POST_HIBERNATION:
+		apm_event = (event == PM_POST_SUSPEND) ?
+			APM_NORMAL_RESUME : APM_HIBERNATION_RESUME;
 		/*
 		 * Anyone on the APM queues will think we're still suspended.
 		 * Send a message so everyone knows we're now awake again.
 		 */
-		queue_event(APM_NORMAL_RESUME);
+		queue_event(apm_event);
 
 		/*
 		 * Finally, wake up anyone who is sleeping on the suspend.
diff --git a/include/uapi/linux/apm_bios.h b/include/uapi/linux/apm_bios.h
index 724f409adae0..df79bca1b898 100644
--- a/include/uapi/linux/apm_bios.h
+++ b/include/uapi/linux/apm_bios.h
@@ -67,6 +67,8 @@ struct apm_bios_info {
 #define APM_USER_SUSPEND	0x000a
 #define APM_STANDBY_RESUME	0x000b
 #define APM_CAPABILITY_CHANGE	0x000c
+#define APM_USER_HIBERNATION	0x000d
+#define APM_HIBERNATION_RESUME	0x000e
 
 /*
  * Error codes