From 064450140f1eab959bd0eca0245f449993216074 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Fri, 12 Oct 2007 14:18:40 -0400 Subject: 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 Signed-off-by: Dmitry Torokhov --- drivers/input/evdev.c | 5 ++++- drivers/input/joydev.c | 5 ++++- drivers/input/mousedev.c | 5 ++++- drivers/input/tsdev.c | 5 ++++- 4 files changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index bfee4f9a771..d404aa8680e 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -192,8 +192,11 @@ static int evdev_open_device(struct evdev *evdev) if (!evdev->exist) retval = -ENODEV; - else if (!evdev->open++) + else if (!evdev->open++) { retval = input_open_device(&evdev->handle); + if (retval) + evdev->open--; + } mutex_unlock(&evdev->mutex); return retval; diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c index a4272d63c4d..f306c97f556 100644 --- a/drivers/input/joydev.c +++ b/drivers/input/joydev.c @@ -205,8 +205,11 @@ static int joydev_open_device(struct joydev *joydev) if (!joydev->exist) retval = -ENODEV; - else if (!joydev->open++) + else if (!joydev->open++) { retval = input_open_device(&joydev->handle); + if (retval) + joydev->open--; + } mutex_unlock(&joydev->mutex); return retval; 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; diff --git a/drivers/input/tsdev.c b/drivers/input/tsdev.c index c189f1dd569..12023349375 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; -- cgit v1.2.3