Some UVC commands require additional data. Add usb_ep_queue(), so
uvc_function_ep0_complete() can be called and send received data
to the userspace.
Fixing maxpacket variable inicialization value to be inside USB
full speed range.
Signed-off-by: Petr Cvek <petr.c...@tul.cz>
---
drivers/usb/gadget/function/f_uvc.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/function/f_uvc.c
b/drivers/usb/gadget/function/f_uvc.c
index cf0df8f..9200d59 100644
--- a/drivers/usb/gadget/function/f_uvc.c
+++ b/drivers/usb/gadget/function/f_uvc.c
@@ -258,6 +258,11 @@ 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) {
+ req->length = uvc->event_length;
+ return usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC);
+ }
return 0;
}
@@ -868,7 +873,7 @@ static struct usb_function_instance *uvc_alloc_inst(void)
(const struct uvc_descriptor_header * const *)ctl_cls;
opts->streaming_interval = 1;
- opts->streaming_maxpacket = 1024;
+ opts->streaming_maxpacket = 1023;
uvcg_attach_configfs(opts);
return &opts->func_inst;
--
1.7.12.1
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