Christopher Monty Montgomery wrote: > patch 15: This fix is not actually to ehci-hcd, but is rather a fix > to usbaudio necessitated by fixing the isoch underrun detection/ > reporting in ehci. usbaudio playback nominally causes one, specific > harmless underrun in startup.
The driver just submits a bunch of URB_ISO_ASAP URBs at the same time. How does this cause an underrun? > err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC); > + if (err == -EL2NSYNC) > + err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC); Why is the second call to usb_submit_urb() supposed to succeed? Does the first call somehow change the state of the controller? Regards, Clemens ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
