On Thu, 1 Mar 2007, Oliver Neukum wrote: > Am Dienstag, 27. Februar 2007 17:03 schrieb Alan Stern: > > > Oliver, I've noticed in the past that khubd tries too hard to enumerate a > > new connection. The new scheme and the old scheme are both tried twice, > > and each try has two attempts to read the device descriptor, where each > > attempt can loop twice, each loop with up to three calls to > > usb_control_msg() and a device reset, with timeouts as long as 1 second. > > > > In really bad cases this can tie things up for close to a minute. We > > ought to be able to do better. Some of the loops should be eliminated and > > some of the timeouts decreased. > > Something like this?
Actually I had in mind something simpler, like getting rid of the GET_DESCRIPTOR_TRIES loop for i (or reducing it to one attempt using the new scheme and one attempt using the old scheme) and getting rid of the SET_ADDRESS_TRIES loop for j, both in hub_port_init(). 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
