diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index 0c6639ea03dd..b079a9c59958 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -47,10 +47,9 @@ static ssize_t hidraw_read(struct file *file, char __user *buffer, size_t count, char *report; DECLARE_WAITQUEUE(wait, current); + mutex_lock(&list->read_mutex); + while (ret == 0) { - - mutex_lock(&list->read_mutex); - if (list->head == list->tail) { add_wait_queue(&list->hidraw->wait, &wait); set_current_state(TASK_INTERRUPTIBLE);