Input: serio - remove pending events when unregistering driver

That fixes an opps when driver is repeatedly loaded and unloaded in
a tight loop.

Tested-by: Roland Kletzing <devzero@web.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index 7f5293828fbf..78f2abb5c11b 100644
--- a/drivers/input/serio/serio.c
+++ b/drivers/input/serio/serio.c
@@ -331,9 +331,10 @@ static void serio_handle_event(void)
 }
 
 /*
- * Remove all events that have been submitted for a given serio port.
+ * Remove all events that have been submitted for a given
+ * object, be it serio port or driver.
  */
-static void serio_remove_pending_events(struct serio *serio)
+static void serio_remove_pending_events(void *object)
 {
         struct list_head *node, *next;
         struct serio_event *event;
@@ -343,7 +344,7 @@ static void serio_remove_pending_events(struct serio *serio)
 
         list_for_each_safe(node, next, &serio_event_list) {
                 event = list_entry(node, struct serio_event, node);
-                if (event->object == serio) {
+                if (event->object == object) {
                         list_del_init(node);
                         serio_free_event(event);
                 }
@@ -837,7 +838,9 @@ void serio_unregister_driver(struct serio_driver *drv)
         struct serio *serio;
 
         mutex_lock(&serio_mutex);
+
         drv->manual_bind = 1;   /* so serio_find_driver ignores it */
+        serio_remove_pending_events(drv);
 
 start_over:
         list_for_each_entry(serio, &serio_list, node) {