| Message ID | 20240403-uvc_request_length_by_interval-v5-9-2de78794365c@pengutronix.de (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | usb: gadget: uvc: effectively fill the udc isoc pipeline with available video buffers and fixes | expand |
diff --git a/drivers/usb/gadget/function/uvc_v4l2.c b/drivers/usb/gadget/function/uvc_v4l2.c index ab89f1630acb0..3492855f0fb29 100644 --- a/drivers/usb/gadget/function/uvc_v4l2.c +++ b/drivers/usb/gadget/function/uvc_v4l2.c @@ -546,6 +546,9 @@ uvc_v4l2_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) if (ret < 0) return ret; + if (uvc->state != UVC_STATE_STREAMING) + return 0; + uvc->state = UVC_STATE_CONNECTED; uvc_function_setup_continue(uvc, 1); return 0;
If the streamoff call was triggered by some previous disconnect or userspace application shutdown the uvc_function_setup_continue should not be called and the state should not be overwritten. For this situation the set_alt(0) was never called and the streaming ep has no USB_GADGET_DELAYED_STATUS pending. Since the state then was already updated before we also omit the state update. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> --- v1 -> v5: - new patch --- drivers/usb/gadget/function/uvc_v4l2.c | 3 +++ 1 file changed, 3 insertions(+)