apm-emulation: add hibernation APM events to support suspend2disk

[linux-drm-fsl-dcu.git] / drivers / char / apm-emulation.c

diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index 46118f8459484a35c3a709c12a28512fd56820af..dd9dfa15e9d13364b1ce2ea65de957bdd21a6ee4 100644 (file)
--- 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.