diff options
| -rw-r--r-- | drivers/media/platform/msm/camera_v2/msm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/media/platform/msm/camera_v2/msm.c b/drivers/media/platform/msm/camera_v2/msm.c index 4e5dc66d94a9..7b8e96710683 100644 --- a/drivers/media/platform/msm/camera_v2/msm.c +++ b/drivers/media/platform/msm/camera_v2/msm.c @@ -34,6 +34,7 @@ static struct v4l2_device *msm_v4l2_dev; static struct list_head ordered_sd_list; +static struct mutex ordered_sd_mtx; static struct pm_qos_request msm_v4l2_pm_qos_request; @@ -404,7 +405,9 @@ int msm_sd_register(struct msm_sd_subdev *msm_subdev) if (WARN_ON(!msm_v4l2_dev) || WARN_ON(!msm_v4l2_dev->dev)) return -EIO; + mutex_lock(&ordered_sd_mtx); msm_add_sd_in_position(msm_subdev, &ordered_sd_list); + mutex_unlock(&ordered_sd_mtx); return __msm_sd_register_subdev(&msm_subdev->sd); } EXPORT_SYMBOL(msm_sd_register); @@ -806,11 +809,13 @@ static long msm_private_ioctl(struct file *file, void *fh, __func__); } + mutex_lock(&ordered_sd_mtx); if (!list_empty(&msm_v4l2_dev->subdevs)) { list_for_each_entry(msm_sd, &ordered_sd_list, list) __msm_sd_notify_freeze_subdevs(msm_sd, event_data->status); } + mutex_unlock(&ordered_sd_mtx); } break; @@ -995,9 +1000,11 @@ static int msm_close(struct file *filep) struct msm_sd_subdev *msm_sd; /*stop all hardware blocks immediately*/ + mutex_lock(&ordered_sd_mtx); if (!list_empty(&msm_v4l2_dev->subdevs)) list_for_each_entry(msm_sd, &ordered_sd_list, list) __msm_sd_close_subdevs(msm_sd, &sd_close); + mutex_unlock(&ordered_sd_mtx); /* remove msm_v4l2_pm_qos_request */ msm_pm_qos_remove_request(); @@ -1353,6 +1360,7 @@ static int msm_probe(struct platform_device *pdev) msm_init_queue(msm_session_q); spin_lock_init(&msm_eventq_lock); spin_lock_init(&msm_pid_lock); + mutex_init(&ordered_sd_mtx); INIT_LIST_HEAD(&ordered_sd_list); cam_debugfs_root = debugfs_create_dir(MSM_CAM_LOGSYNC_FILE_BASEDIR, |