Hi, Orion Poplawski <orion@xxxxxxxxxxxxx> writes: > See https://bugzilla.kernel.org/show_bug.cgi?id=107331 > > Trying to use my scanner. Worked for a while, but now access fails. Get this > in log: okay, first things first. Which kernel version are you using ? Care to capture a usbmon trace ? (see Documentation/usb/usbmon.txt for instructions) > Nov 05 20:25:51 pacas.cora.nwra.com kernel: usb 1-3: new full-speed USB device > number 3 using xhci_hcd > Nov 05 20:25:52 pacas.cora.nwra.com kernel: usb 1-3: New USB device found, > idVendor=04a9, idProduct=2206 > Nov 05 20:25:52 pacas.cora.nwra.com kernel: usb 1-3: New USB device strings: > Mfr=64, Product=77, SerialNumber=0 > Nov 05 20:25:52 pacas.cora.nwra.com kernel: usb 1-3: Product: CanoScan > Nov 05 20:25:52 pacas.cora.nwra.com kernel: usb 1-3: Manufacturer: Canon > Nov 05 20:27:55 pacas.cora.nwra.com kernel: xhci_hcd 0000:00:14.0: URB > transfer length is wrong, xHC issue? req. len = 0, act. len = 4294967288 this looks like the length variable wrapped around ? that value is 0xfffffff8 which is -8 on 32-bits. Are you, perhaps, using an older kernel which still has this issue with wrapping which has been fixed before ? > How reproducible: > First time so far. > > Additional info: > 00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family > USB xHCI Host Controller (rev 04) (prog-if 30 [XHCI]) > Subsystem: Acer Incorporated [ALI] Device 0748 > Flags: bus master, medium devsel, latency 0, IRQ 25 > Memory at c0600000 (64-bit, non-prefetchable) [size=64K] > Capabilities: [70] Power Management version 2 > Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+ > Kernel driver in use: xhci_hcd > > Possibly related: > https://www.mail-archive.com/linux-usb@xxxxxxxxxxxxxxx/msg50230.html > > -- > Orion Poplawski > Technical Manager 303-415-9701 x222 > NWRA, Boulder/CoRA Office FAX: 303-415-9702 > 3380 Mitchell Lane orion@xxxxxxxx > Boulder, CO 80301 http://www.nwra.com > -- > 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 -- balbi
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