diff options
| -rw-r--r-- | drivers/hid/hid-debug.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c index c94026768570..850d02a7a925 100644 --- a/drivers/hid/hid-debug.c +++ b/drivers/hid/hid-debug.c @@ -949,8 +949,8 @@ static ssize_t hid_debug_events_read(struct file *file, char __user *buffer, int ret = 0, len; 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->hdev->debug_wait, &wait); set_current_state(TASK_INTERRUPTIBLE); |