Re: PATCH: usb-uhci: interrupt out with urb->interval 0

[Greg KH <greg@kroah.com>]

On Thu, Apr 17, 2003 at 10:31:18AM +0200, Frode Isaksen wrote:
> A recent change (2.4.21)

Um, 2.4.21 is not out yet :)

> in the usb-uhci driver calls 
> "uhci_clean_iso_step2" after the completion of one-shot (urb->interval 
> 0) interrupt out transfers. This call clears the list of descriptors. 
> However, it crashes when trying to get the next desciptor in the "for" 
> loop in the "process_interrupt" function, since the list of descriptors 
> are already cleared. A simple change I did was to do a "break" to quit 
> the "for" loop for interrupt out transfers with urb->interval 0.

Hm, I thought someone tested this previously.  Do you have a test case
for this that I can try to duplicate the problem for?

Also, your patch will not apply against the latest (2.4.21-pre7) version
of this file.

thanks,

greg k-h

p.s. I'd recommend sending these kinds of patches to the linux-usb-devel
mailing list too.  That's where most of the Linux USB developers are.