Input: gameport - make use of list_first_entry() helper

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 11 insertions, 19 deletions

diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c
index f9e5f8e1690b..953a20bf26e8 100644
--- a/drivers/input/gameport/gameport.c
+++ b/drivers/input/gameport/gameport.c
@@ -298,14 +298,12 @@ static void gameport_free_event(struct gameport_event *event)
 
 static void gameport_remove_duplicate_events(struct gameport_event *event)
 {
-        struct list_head *node, *next;
-        struct gameport_event *e;
+        struct gameport_event *e, *next;
         unsigned long flags;
 
         spin_lock_irqsave(&gameport_event_lock, flags);
 
-        list_for_each_safe(node, next, &gameport_event_list) {
-                e = list_entry(node, struct gameport_event, node);
+        list_for_each_entry_safe(e, next, &gameport_event_list, node) {
                 if (event->object == e->object) {
                         /*
                          * If this event is of different type we should not
@@ -315,7 +313,7 @@ static void gameport_remove_duplicate_events(struct gameport_event *event)
                         if (event->type != e->type)
                                 break;
 
-                        list_del_init(node);
+                        list_del_init(&e->node);
                         gameport_free_event(e);
                 }
         }
@@ -325,21 +323,17 @@ static void gameport_remove_duplicate_events(struct gameport_event *event)
 
 static struct gameport_event *gameport_get_event(void)
 {
-        struct gameport_event *event;
-        struct list_head *node;
+        struct gameport_event *event = NULL;
         unsigned long flags;
 
         spin_lock_irqsave(&gameport_event_lock, flags);
 
-        if (list_empty(&gameport_event_list)) {
-                spin_unlock_irqrestore(&gameport_event_lock, flags);
-                return NULL;
+        if (!list_empty(&gameport_event_list)) {
+                event = list_first_entry(&gameport_event_list,
+                                         struct gameport_event, node);
+                list_del_init(&event->node);
         }
 
-        node = gameport_event_list.next;
-        event = list_entry(node, struct gameport_event, node);
-        list_del_init(node);
-
         spin_unlock_irqrestore(&gameport_event_lock, flags);
 
         return event;
@@ -385,16 +379,14 @@ static void gameport_handle_event(void)
  */
 static void gameport_remove_pending_events(void *object)
 {
-        struct list_head *node, *next;
-        struct gameport_event *event;
+        struct gameport_event *event, *next;
         unsigned long flags;
 
         spin_lock_irqsave(&gameport_event_lock, flags);
 
-        list_for_each_safe(node, next, &gameport_event_list) {
-                event = list_entry(node, struct gameport_event, node);
+        list_for_each_entry_safe(event, next, &gameport_event_list, node) {
                 if (event->object == object) {
-                        list_del_init(node);
+                        list_del_init(&event->node);
                         gameport_free_event(event);
                 }
         }