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path: root/drivers/media/usb/uvc/uvc_video.c
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Diffstat (limited to 'drivers/media/usb/uvc/uvc_video.c')
-rw-r--r--drivers/media/usb/uvc/uvc_video.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index 898c208889c..8d52baf5952 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -1453,6 +1453,9 @@ static unsigned int uvc_endpoint_max_bpi(struct usb_device *dev,
case USB_SPEED_HIGH:
psize = usb_endpoint_maxp(&ep->desc);
return (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
+ case USB_SPEED_WIRELESS:
+ psize = usb_endpoint_maxp(&ep->desc);
+ return psize;
default:
psize = usb_endpoint_maxp(&ep->desc);
return psize & 0x07ff;
@@ -1847,7 +1850,25 @@ int uvc_video_enable(struct uvc_streaming *stream, int enable)
if (!enable) {
uvc_uninit_video(stream, 1);
- usb_set_interface(stream->dev->udev, stream->intfnum, 0);
+ if (stream->intf->num_altsetting > 1) {
+ usb_set_interface(stream->dev->udev,
+ stream->intfnum, 0);
+ } else {
+ /* UVC doesn't specify how to inform a bulk-based device
+ * when the video stream is stopped. Windows sends a
+ * CLEAR_FEATURE(HALT) request to the video streaming
+ * bulk endpoint, mimic the same behaviour.
+ */
+ unsigned int epnum = stream->header.bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK;
+ unsigned int dir = stream->header.bEndpointAddress
+ & USB_ENDPOINT_DIR_MASK;
+ unsigned int pipe;
+
+ pipe = usb_sndbulkpipe(stream->dev->udev, epnum) | dir;
+ usb_clear_halt(stream->dev->udev, pipe);
+ }
+
uvc_queue_enable(&stream->queue, 0);
uvc_video_clock_cleanup(stream);
return 0;