From: tangchunyou <tangchunyou@xxxxxxxxxx> mutex_lock should before mutex_unlock Signed-off-by: tangchunyou <tangchunyou@xxxxxxxxxx> --- drivers/input/mouse/psmouse-base.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c index 0b4a303..d01798c 100644 --- a/drivers/input/mouse/psmouse-base.c +++ b/drivers/input/mouse/psmouse-base.c @@ -1923,9 +1923,9 @@ static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, co return -EIO; } - mutex_unlock(&psmouse_mutex); - serio_unregister_child_port(serio); mutex_lock(&psmouse_mutex); + serio_unregister_child_port(serio); + mutex_unlock(&psmouse_mutex); if (serio->drv != &psmouse_drv) { input_free_device(new_dev); -- 1.9.1