Re: [linux-usb-devel] usb_fill_bulk_urb() broken for USB1.1?

Oliver Neukum
2007-06-27T07:35:26Z

Am Mittwoch, 27. Juni 2007 schrieb Keith Chew:
> Hi Oliver
>
> >
> > What do you use as arguments for usb_fill_bulk_urb() ? One of the sanity tests
> > in usb_submit_urb() is triggered.
> >
>
> Usage:
>
> usb_fill_bulk_urb(macp->intr_urb, macp->usb,
> usb_rcvbulkpipe(macp->usb, EP_INT_IN),
> macp->IntEPBuffer, MAX_EPINT_BUFFER,
> zd1211_intr_cb, macp);

See Pete's post.

You are initialising an interrupt urb with an initializer for
a bulk urb. The behavior is undefined. In older kernels
by random chance a sensible interval was set.

You need to use the correct initializer and the correct interval,
which usually can be read from the device's descriptors.

Regards
Oliver