Le lundi 17 décembre 2012 23:30:02, Sarah Sharp a écrit : > Will you please apply this patch to whatever stable kernel you're > running and see if the device works under xHCI? Please send the dmesg > output in either case. [42363.294837] usb 2-2: new high-speed USB device number 2 using xhci_hcd [42363.312501] usb 2-2: New USB device found, idVendor=16c0, idProduct=07a8 [42363.312513] usb 2-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [42364.691622] usb 2-2: USB disconnect, device number 2 [42366.444479] usb 2-2: new high-speed USB device number 3 using xhci_hcd [42366.461884] usb 2-2: config 1 interface 0 altsetting 0 bulk endpoint 0x1 has invalid maxpacket 64 [42366.461898] usb 2-2: config 1 interface 0 altsetting 0 bulk endpoint 0x81 has invalid maxpacket 64 [42366.463102] usb 2-2: New USB device found, idVendor=16c0, idProduct=07a9 [42366.463114] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [42366.463121] usb 2-2: Product: USB Analyzer 1480A [42366.463128] usb 2-2: Manufacturer: International Test Instruments [42366.463448] xhci_hcd 0000:02:00.0: ERROR: unexpected command completion code 0x11. [42366.463468] usb 2-2: can't set config #1, error -22 We can see device re-numeration, ie when firmware got completely uploaded to the FX2LP and it restarts with final descriptors. As I expected from the presence of both errors the device is still unusable with xhci, but bInterval warnings are gone. Should I test any device to validate the patch further ? I have several USB2 devices and a single USB3 HDD, but never paid attention at their bInterval. This was tested on (otherwise clean) kernel.org 3.6.10 . Regards, -- Vincent Pelletier -- 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