diff options
| -rw-r--r-- | drivers/media/platform/msm/ais/camera/camera.c | 6 | ||||
| -rw-r--r-- | drivers/media/platform/msm/ais/msm.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/media/platform/msm/ais/camera/camera.c b/drivers/media/platform/msm/ais/camera/camera.c index 33808d18d4c4..3f477d50ceaf 100644 --- a/drivers/media/platform/msm/ais/camera/camera.c +++ b/drivers/media/platform/msm/ais/camera/camera.c @@ -628,6 +628,7 @@ static int camera_v4l2_open(struct file *filep) if (WARN_ON(!pvdev)) return -EIO; + mutex_lock(&pvdev->video_drvdata_mutex); rc = camera_v4l2_fh_open(filep); if (rc < 0) { pr_err("%s : camera_v4l2_fh_open failed Line %d rc %d\n", @@ -698,6 +699,7 @@ static int camera_v4l2_open(struct file *filep) idx |= (1 << find_first_zero_bit((const unsigned long *)&opn_idx, MSM_CAMERA_STREAM_CNT_BITS)); atomic_cmpxchg(&pvdev->opened, opn_idx, idx); + mutex_unlock(&pvdev->video_drvdata_mutex); return rc; @@ -712,6 +714,7 @@ stream_fail: vb2_q_fail: camera_v4l2_fh_release(filep); fh_open_fail: + mutex_unlock(&pvdev->video_drvdata_mutex); return rc; } @@ -746,6 +749,7 @@ static int camera_v4l2_close(struct file *filep) if (WARN_ON(!session)) return -EIO; + mutex_lock(&pvdev->video_drvdata_mutex); mutex_lock(&session->close_lock); opn_idx = atomic_read(&pvdev->opened); mask = (1 << sp->stream_id); @@ -788,6 +792,7 @@ static int camera_v4l2_close(struct file *filep) } camera_v4l2_fh_release(filep); + mutex_unlock(&pvdev->video_drvdata_mutex); return 0; } @@ -936,6 +941,7 @@ int camera_init_v4l2(struct device *dev, unsigned int *session) *session = pvdev->vdev->num; atomic_set(&pvdev->opened, 0); + mutex_init(&pvdev->video_drvdata_mutex); video_set_drvdata(pvdev->vdev, pvdev); device_init_wakeup(&pvdev->vdev->dev, 1); goto init_end; diff --git a/drivers/media/platform/msm/ais/msm.h b/drivers/media/platform/msm/ais/msm.h index 5d456310c301..ff3008ec6872 100644 --- a/drivers/media/platform/msm/ais/msm.h +++ b/drivers/media/platform/msm/ais/msm.h @@ -46,6 +46,7 @@ extern bool is_daemon_status; struct msm_video_device { struct video_device *vdev; atomic_t opened; + struct mutex video_drvdata_mutex; }; struct msm_queue_head { |