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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /drivers/media/usb/uvc/uvc_v4l2.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'drivers/media/usb/uvc/uvc_v4l2.c')
-rw-r--r--drivers/media/usb/uvc/uvc_v4l2.c16
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 c4b1ac675..2764f4360 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,