提交 06445014 编写于 作者: O Oliver Neukum 提交者: Dmitry Torokhov

Input: fix open count handling in input interfaces

If input_open_device() fails we should not leave interfaces marked
as  opened.
Signed-off-by: NOliver Neukum <oneukum@suse.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
上级 1ea3abf7
......@@ -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;
......
......@@ -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;
......
......@@ -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;
......
......@@ -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;
......
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