1 files changed, 19 insertions, 12 deletions

diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index 564974ce5793..062848ac7e6b 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -101,6 +101,7 @@ struct mousedev_list {
         unsigned char ready, buffer, bufsiz;
         unsigned char imexseq, impsseq;
         enum mousedev_emul mode;
+        unsigned long last_buttons;
 };
 
 #define MOUSEDEV_SEQ_LEN        6
@@ -224,7 +225,7 @@ static void mousedev_notify_readers(struct mousedev *mousedev, struct mousedev_h
                 spin_lock_irqsave(&list->packet_lock, flags);
 
                 p = &list->packets[list->head];
-                if (list->ready && p->buttons != packet->buttons) {
+                if (list->ready && p->buttons != mousedev->packet.buttons) {
                         unsigned int new_head = (list->head + 1) % PACKET_QUEUE_LEN;
                         if (new_head != list->tail) {
                                 p = &list->packets[list->head = new_head];
@@ -249,10 +250,13 @@ static void mousedev_notify_readers(struct mousedev *mousedev, struct mousedev_h
                 p->dz += packet->dz;
                 p->buttons = mousedev->packet.buttons;
 
-                list->ready = 1;
+                if (p->dx || p->dy || p->dz || p->buttons != list->last_buttons)
+                        list->ready = 1;
 
                 spin_unlock_irqrestore(&list->packet_lock, flags);
-                kill_fasync(&list->fasync, SIGIO, POLL_IN);
+
+                if (list->ready)
+                        kill_fasync(&list->fasync, SIGIO, POLL_IN);
         }
 
         wake_up_interruptible(&mousedev->wait);
@@ -477,9 +481,10 @@ static void mousedev_packet(struct mousedev_list *list, signed char *ps2_data)
         }
 
         if (!p->dx && !p->dy && !p->dz) {
-                if (list->tail == list->head)
+                if (list->tail == list->head) {
                         list->ready = 0;
-                else
+                        list->last_buttons = p->buttons;
+                } else
                         list->tail = (list->tail + 1) % PACKET_QUEUE_LEN;
         }
 
@@ -642,9 +647,9 @@ static struct input_handle *mousedev_connect(struct input_handler *handler, stru
 
         devfs_mk_cdev(MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor),
                         S_IFCHR|S_IRUGO|S_IWUSR, "input/mouse%d", minor);
-        class_simple_device_add(input_class,
-                                MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor),
-                                dev->dev, "mouse%d", minor);
+        class_device_create(input_class,
+                        MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor),
+                        dev->dev, "mouse%d", minor);
 
         return &mousedev->handle;
 }
@@ -654,7 +659,8 @@ static void mousedev_disconnect(struct input_handle *handle)
         struct mousedev *mousedev = handle->private;
         struct mousedev_list *list;
 
-        class_simple_device_remove(MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + mousedev->minor));
+        class_device_destroy(input_class,
+                        MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + mousedev->minor));
         devfs_remove("input/mouse%d", mousedev->minor);
         mousedev->exist = 0;
 
@@ -730,8 +736,8 @@ static int __init mousedev_init(void)
 
         devfs_mk_cdev(MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX),
                         S_IFCHR|S_IRUGO|S_IWUSR, "input/mice");
-        class_simple_device_add(input_class, MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX),
-                                NULL, "mice");
+        class_device_create(input_class,
+                        MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX), NULL, "mice");
 
 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
         if (!(psaux_registered = !misc_register(&psaux_mouse)))
@@ -750,7 +756,8 @@ static void __exit mousedev_exit(void)
                 misc_deregister(&psaux_mouse);
 #endif
         devfs_remove("input/mice");
-        class_simple_device_remove(MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX));
+        class_device_destroy(input_class,
+                        MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX));
         input_unregister_handler(&mousedev_handler);
 }