On Thu, Nov 04, 2010 at 10:53:21AM -0400, Alan Stern wrote: > On Thu, 4 Nov 2010, Sarah Sharp wrote: > > > But the real issue is that the UVC driver can use less bandwidth than > > the device specifies in its endpoint descriptors, but there's no way for > > the xHCI driver to know that. It can only use the interval and max > > packet size advertised in the endpoint descriptor. There needs to be a > > new API for USB video drivers to tell the xHCI driver what the real > > bandwidth expectations are. Until then, your webcam won't work under > > xHCI. > > But this same objection applies when the camera is plugged into a > USB-2.0 controller. Since it works then, it should also work with > xHCI. Yes, this USB 2.0 device should work under the NEC xHCI host controller now that we have the input context straightened out. It's probably a hardware bug in the host. I'll email NEC about it, but it's likely they have fixed this in a later firmware version. 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
