On Tue, Sep 03, 2013 at 01:51:55PM -0500, joe M wrote: > Hello Sarah, > > Thanks for responding. > > > I'm the xHCI driver maintainer, can you please Cc me on any future bug > > reports for xHCI hosts? Otherwise it gets lost in my mailing list > > inbox. > > Sure, will do so. > > > Is your device prepared to accept the Set Address control transfer > > before it receives an 8-byte Get Descriptor? > > > > I ask because it's fairly common for this kind of issue to be the root > > cause when the device isn't ready to accept a Set Address control > > transfer. > > Yes, it is. Hmmm. Any chance you can get a USB bus analyzer (a 1.1 one would be fine) to see if the Set Address is send and responded to properly? If the bus transfer looks fine, that would indicate an issue with either the xHCI host controller, or the xHCI driver. > > Or perhaps your device takes a really long time to get ready > > to accept the Set Address command? > > Any thoughts on what is considered a "really long time", please? 5 seconds. That's a really long time in USB bus time. ;) Also it's the Linux USB core's control transfer timeout length. Sarah Sharp -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
