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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>
This commit is contained in:
Oliver Neukum 2007-10-12 14:18:40 -04:00 committed by Dmitry Torokhov
parent 1ea3abf7fb
commit 064450140f
4 changed files with 16 additions and 4 deletions
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5
drivers/input/evdev.c
View File

@ -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;

5
drivers/input/joydev.c
View File

@ -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;

5
drivers/input/mousedev.c
View File

@ -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;

5
drivers/input/tsdev.c
View File

@ -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;