On Thu, 21 Dec 2006, matthieu castet wrote: > >> I tried the device on a computer using 2.6.19 and a NEC EHCI controller > >> (upd720102), and I got the same problem. > >> > >> Seems the bug is not in the usb host hardware. > > > > Can you provide more detailed debugging information for the NEC > > controller, like what you did before? > Sorry I can't do this now. I may be do it in January. > > > Maybe also try adding printk > > statements to the beginning and end of the ehci_endpoint_disable() routine > > in ehci-hcd.c, so we can see if that routine is hanging. > > IIRC, the old trace (via one) say it was hanging in > ehci_endpoint_disable. Can't we add a counter to avoid looping forever > (rescan -> case QH_STATE_UNLINK -> rescan). > > On which event we leave QH_STATE_UNLINK state ? > Is it a sw or hw event ?
I don't know enough about the controller or the driver. Dave or Monty should be able to answer these questions. > Matthieu > > PS : BTW on via controller, there sometimes lost irq errors. We know! :-( Alan Stern ------------------------------------------------------------------------- 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
