Input: send key up events at disconnect

Emit key up events for all pressed keys/buttons when disconnecting
an input device. Cures "stuck" enter key effect when unloading
keyboard module.

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

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 1fc0517e9428..1c71dd6fe5cd 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1014,9 +1014,12 @@ EXPORT_SYMBOL(input_register_device);
 void input_unregister_device(struct input_dev *dev)
 {
         struct list_head *node, *next;
+        int code;
 
-        if (!dev)
-                return;
+        for (code = 0; code <= KEY_MAX; code++)
+                if (test_bit(code, dev->key))
+                        input_report_key(dev, code, 0);
+        input_sync(dev);
 
         del_timer_sync(&dev->timer);