> -----Original Message----- > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb- > owner@xxxxxxxxxxxxxxx] On Behalf Of CAI Qian > Sent: Wednesday, July 20, 2011 3:36 PM > To: linux-usb > Cc: Sarah Sharp > Subject: usb3 express card: unable to enumerate USB device > > Hi Sarah and all, > > While debugging https://bugzilla.kernel.org/show_bug.cgi?id=34782, > there are many of those messages after the reboot. > > usb 9-2: new high speed USB device number 3 using xhci_hcd > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x0. > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x0. > usb 9-2: device not accepting address 3, error -22 > usb 9-2: new high speed USB device number 4 using xhci_hcd > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x0. > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x0. > usb 9-2: device not accepting address 4, error -22 > usb 9-2: new high speed USB device number 5 using xhci_hcd > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x0. > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x0. > usb 9-2: device not accepting address 5, error -22 > usb 9-2: new high speed USB device number 6 using xhci_hcd > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x0. > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x0. > usb 9-2: device not accepting address 6, error -22 > hub 9-0:1.0: unable to enumerate USB device on port 2 > > 0000:05:00.0 is the Express Card USB 3.0 card. > # lspci > 05:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host > Controller (rev 03) > > From lsusb, there is no usb 9-2 but usb 9-1. I guess 9-2 is one of end > port from > the root hub of the Express Card. > # lsusb > Bus 009 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > > As the results, the end device - USB 2 MP3 (9-3?) device could not be > detected > until re-attached. Does it look like a hardware or software problem? > Any way to > debug this enumeration problem any further? > >From the log, it appears driver sends set address command to the host, but the host returns a command completion TRB with completion code set to 0, which means invalid. Sounds like a HW/FW problem to me. Thanks, Andiry ��.n��������+%������w��{.n�����{���)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
