diff options
Diffstat (limited to 'drivers/media/usb/uvc/uvc_v4l2.c')
| -rw-r--r-- | drivers/media/usb/uvc/uvc_v4l2.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index c4b1ac6750d8..2764f43607c1 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -483,9 +483,6 @@ static int uvc_v4l2_open(struct file *file) uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_open\n"); stream = video_drvdata(file); - if (stream->dev->state & UVC_DEV_DISCONNECTED) - return -ENODEV; - ret = usb_autopm_get_interface(stream->dev->intf); if (ret < 0) return ret; @@ -723,6 +720,18 @@ static int uvc_ioctl_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) return uvc_queue_buffer(&stream->queue, buf); } +static int uvc_ioctl_expbuf(struct file *file, void *fh, + struct v4l2_exportbuffer *exp) +{ + struct uvc_fh *handle = fh; + struct uvc_streaming *stream = handle->stream; + + if (!uvc_has_privileges(handle)) + return -EBUSY; + + return uvc_export_buffer(&stream->queue, exp); +} + static int uvc_ioctl_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) { struct uvc_fh *handle = fh; @@ -1478,6 +1487,7 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = { .vidioc_reqbufs = uvc_ioctl_reqbufs, .vidioc_querybuf = uvc_ioctl_querybuf, .vidioc_qbuf = uvc_ioctl_qbuf, + .vidioc_expbuf = uvc_ioctl_expbuf, .vidioc_dqbuf = uvc_ioctl_dqbuf, .vidioc_create_bufs = uvc_ioctl_create_bufs, .vidioc_streamon = uvc_ioctl_streamon, |