diff options
| -rw-r--r-- | drivers/media/platform/msm/camera_v2/msm.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/media/platform/msm/camera_v2/msm.c b/drivers/media/platform/msm/camera_v2/msm.c index 8596366a70f0..f95cc37f5c2c 100644 --- a/drivers/media/platform/msm/camera_v2/msm.c +++ b/drivers/media/platform/msm/camera_v2/msm.c @@ -1015,11 +1015,9 @@ static int msm_open(struct file *filep) BUG_ON(!pvdev); /* !!! only ONE open is allowed !!! */ - if (atomic_read(&pvdev->opened)) + if (atomic_cmpxchg(&pvdev->opened, 0, 1)) return -EBUSY; - atomic_set(&pvdev->opened, 1); - spin_lock_irqsave(&msm_pid_lock, flags); msm_pid = get_pid(task_pid(current)); spin_unlock_irqrestore(&msm_pid_lock, flags); |