diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/uvc/uvc_v4l2.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index f8b94d608a1..5e77cad2969 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -530,7 +530,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) memset(&xctrl, 0, sizeof xctrl); xctrl.id = ctrl->id; - uvc_ctrl_begin(video); + ret = uvc_ctrl_begin(video); + if (ret < 0) + return ret; + ret = uvc_ctrl_get(video, &xctrl); uvc_ctrl_rollback(video); if (ret >= 0) @@ -547,7 +550,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) xctrl.id = ctrl->id; xctrl.value = ctrl->value; - uvc_ctrl_begin(video); + ret = uvc_ctrl_begin(video); + if (ret < 0) + return ret; + ret = uvc_ctrl_set(video, &xctrl); if (ret < 0) { uvc_ctrl_rollback(video); @@ -566,7 +572,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) struct v4l2_ext_control *ctrl = ctrls->controls; unsigned int i; - uvc_ctrl_begin(video); + ret = uvc_ctrl_begin(video); + if (ret < 0) + return ret; + for (i = 0; i < ctrls->count; ++ctrl, ++i) { ret = uvc_ctrl_get(video, ctrl); if (ret < 0) { |