On Tuesday, January 18, 2011 11:54:22 pm Reinhard Meyer wrote:
> Dear Marcel,
>
> >> Well,you're supposed to do some basic code reading yourself.
> >
> > Of course. It's always the idea to post a question after reading for some
> > time. It either means I don't understand the code, the code really
> > doesn't work or I did miss the most important part in the documents. I
> > guess the answer will follow once the issue is solved.
> > To be specific, I work with the u-boot-usb at91-cdc branch code. I'm not
> > sure if that is all working code at this moment but sounded like the
> > best starting point for my USB code.
>
> Not sure that branch is anything up to date....
hmmm. What branch is best to work on for this code ?
> >>> req->buf = (u8 *) NetRxPackets[0];
>
> *maybe* "req" itself is not allocated?
Good question. My code that rejects the buffer is this :
static int
usba_ep_queue(struct usb_ep *_ep,
struct usb_request *_req,
gfp_t gfp_flags)
{
struct usba_request *req = container_of(_req, struct usba_request,
req);
struct usba_ep *ep = container_of(_ep, struct usba_ep, ep);
struct usba_udc *udc = ep->udc;
int ret;
debug("%s: queue req %p, len %u\n",
ep->ep.name, req, _req->length);
if (!_req || !_req->complete
|| !_req->buf || !list_empty(&req->queue)) {
DBG("invalid request\n");
if(!_req) debug("NO REQUEST\n");
if(!_req->complete) debug("NO REQUEST COMPLETE\n");
if(!_req->buf) debug("NO REQUEST BUF\n");
if(!list_empty(&req->queue)) debug("NO LIST EMPTY\n");
return -EINVAL;
}
It just keeps failing with "NO REQUEST BUF". I feel like I'm staring at a typo
for days and just don't see it.
regards,
Marcel
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