Input: fix open count handling in input interfaces

If input_open_device() fails we should not leave interfaces marked
as  opened.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index 715def79390..cc36edbb912 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -428,8 +428,11 @@ static int mousedev_open_device(struct mousedev *mousedev)
                 mixdev_open_devices();
         else if (!mousedev->exist)
                 retval = -ENODEV;
-        else if (!mousedev->open++)
+        else if (!mousedev->open++) {
                 retval = input_open_device(&mousedev->handle);
+                if (retval)
+                        mousedev->open--;
+        }
 
         mutex_unlock(&mousedev->mutex);
         return retval;