diff options
| -rw-r--r-- | drivers/media/usb/uvc/uvc_v4l2.c | 18 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvcvideo.h | 1 |
2 files changed, 14 insertions, 5 deletions
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 39065db44e86..22886b47d81c 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -841,11 +841,18 @@ static int uvc_ioctl_streamon(struct file *file, void *fh, if (!uvc_has_privileges(handle)) return -EBUSY; - mutex_lock(&stream->mutex); + guard(mutex)(&stream->mutex); + + if (handle->is_streaming) + return 0; + ret = uvc_queue_streamon(&stream->queue, type); - mutex_unlock(&stream->mutex); + if (ret) + return ret; - return ret; + handle->is_streaming = true; + + return 0; } static int uvc_ioctl_streamoff(struct file *file, void *fh, @@ -857,9 +864,10 @@ static int uvc_ioctl_streamoff(struct file *file, void *fh, if (!uvc_has_privileges(handle)) return -EBUSY; - mutex_lock(&stream->mutex); + guard(mutex)(&stream->mutex); + uvc_queue_streamoff(&stream->queue, type); - mutex_unlock(&stream->mutex); + handle->is_streaming = false; return 0; } diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index b4ee701835fc..5ceb01e7831a 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -630,6 +630,7 @@ struct uvc_fh { struct uvc_streaming *stream; enum uvc_handle_state state; unsigned int pending_async_ctrls; + bool is_streaming; }; /* ------------------------------------------------------------------------ |