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Diffstat (limited to 'drivers/hid/hidraw.c')
-rw-r--r--drivers/hid/hidraw.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index ba05275e5104..cdd136942bca 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -48,10 +48,9 @@ static ssize_t hidraw_read(struct file *file, char __user *buffer, size_t count,
48 char *report; 48 char *report;
49 DECLARE_WAITQUEUE(wait, current); 49 DECLARE_WAITQUEUE(wait, current);
50 50
51 while (ret == 0) { 51 mutex_lock(&list->read_mutex);
52
53 mutex_lock(&list->read_mutex);
54 52
53 while (ret == 0) {
55 if (list->head == list->tail) { 54 if (list->head == list->tail) {
56 add_wait_queue(&list->hidraw->wait, &wait); 55 add_wait_queue(&list->hidraw->wait, &wait);
57 set_current_state(TASK_INTERRUPTIBLE); 56 set_current_state(TASK_INTERRUPTIBLE);