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authorOliver Neukum <oliver@neukum.org>2007-10-12 14:18:40 -0400
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2007-10-12 14:18:40 -0400
commit064450140f1eab959bd0eca0245f449993216074 (patch)
treeae8c7e238224b74e90f860129b1236c3eeedc470
parent1ea3abf7fbc39b3b543d7438159ba07b6411561c (diff)
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>
-rw-r--r--drivers/input/evdev.c5
-rw-r--r--drivers/input/joydev.c5
-rw-r--r--drivers/input/mousedev.c5
-rw-r--r--drivers/input/tsdev.c5
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;