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/tsdev.c b/drivers/input/tsdev.c
index c189f1dd569f..120233493758 100644
--- a/drivers/input/tsdev.c
+++ b/drivers/input/tsdev.c
@@ -185,8 +185,11 @@ static int tsdev_open_device(struct tsdev *tsdev)
 
         if (!tsdev->exist)
                 retval = -ENODEV;
-        else if (!tsdev->open++)
+        else if (!tsdev->open++) {
                 retval = input_open_device(&tsdev->handle);
+                if (retval)
+                        tsdev->open--;
+        }
 
         mutex_unlock(&tsdev->mutex);
         return retval;