Some UVC commands require additional data (non zero uvc->event_length).
Add usb_ep_queue() call, so uvc_function_ep0_complete() can be called
and send received data to the userspace.
Signed-off-by: Petr Cvek <petr.c...@tul.cz>
---
drivers/usb/gadget/function/f_uvc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/usb/gadget/function/f_uvc.c
b/drivers/usb/gadget/function/f_uvc.c
index 29b41b5..27ed51b 100644
--- a/drivers/usb/gadget/function/f_uvc.c
+++ b/drivers/usb/gadget/function/f_uvc.c
@@ -258,6 +258,13 @@ uvc_function_setup(struct usb_function *f, const struct
usb_ctrlrequest *ctrl)
memcpy(&uvc_event->req, ctrl, sizeof(uvc_event->req));
v4l2_event_queue(&uvc->vdev, &v4l2_event);
+ /* Pass additional setup data to userspace */
+ if (uvc->event_setup_out && uvc->event_length) {
+ uvc->control_req->length = uvc->event_length;
+ return usb_ep_queue(uvc->func.config->cdev->gadget->ep0,
+ uvc->control_req, GFP_ATOMIC);
+ }
+
return 0;
}
--
2.9.2
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