diff mbox series

[1/2] usb: gadget: uvc: dont drop frames if zero length packages are late

Message ID 20240214-uvc-error-tag-v1-1-37659a3877fe@pengutronix.de
State New
Headers
Series usb: gadget: uvc: improve tagging transmit errors |

Commit Message

Michael Grzeschik Feb. 13, 2024, 11:37 p.m. UTC 
  If the request that was missed was zero bytes long, it
is likely that the overall transferred frame was not affected.
So don't flag the frame incomplete in that case.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
---
 drivers/usb/gadget/function/uvc_video.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c
index dd3241fc6939d..c288aceee92ac 100644
--- a/drivers/usb/gadget/function/uvc_video.c
+++ b/drivers/usb/gadget/function/uvc_video.c
@@ -397,7 +397,8 @@  uvc_video_complete(struct usb_ep *ep, struct usb_request *req)
 
 	case -EXDEV:
 		uvcg_dbg(&video->uvc->func, "VS request missed xfer.\n");
-		queue->flags |= UVC_QUEUE_DROP_INCOMPLETE;
+		if (req->length != 0)
+			queue->flags |= UVC_QUEUE_DROP_INCOMPLETE;
 		break;
 
 	case -ESHUTDOWN:	/* disconnect from host. */