On 11 March 2013 01:32, Clemens Ladisch <[email protected]> wrote: > David Helstroom wrote: >> Interface 1 does not exist > > Then it doesn't need a quirk, does it?
Perhaps that's the case. I just know that without QUIRK_IGNORE_INTERFACE for ifnum 1, the kernel refuses to properly configure the output device. From dmesg without this patch: [ 3254.192225] usb 1-1: new high-speed USB device number 6 using ehci_hcd [ 3254.343554] usb 1-1: config 1 has an invalid interface number: 3 but max is 2 [ 3254.343558] usb 1-1: config 1 has an invalid interface number: 3 but max is 2 [ 3254.343562] usb 1-1: config 1 has an invalid interface number: 3 but max is 2 [ 3254.343565] usb 1-1: config 1 has an invalid interface number: 3 but max is 2 [ 3254.343568] usb 1-1: config 1 has no interface number 1 [ 3254.345988] input: Nuforce Inc., Nuforce 192k USB DAC as /devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1:1.0/input/input10 [ 3254.346202] generic-usb 0003:16D0:0631.0007: input,hidraw0: USB HID v1.00 Device [Nuforce Inc., Nuforce 192k USB DAC] on usb-0000:00:1a.7-1/input0 [ 3254.355970] Audio class v2 interfaces need an interface association [ 3254.355988] snd-usb-audio: probe of 1-1:1.2 failed with error -5 [ 3254.356045] usbcore: registered new interface driver snd-usb-audio >> and Interface 0 should be ignored. > > Why? > > If the driver doesn't like something in interface 0, that bug should be > fixed. > > What is the output of "lsusb -v" for this device? I've put up the relevant output on: http://pastebin.com/i4wpQ35B Note that I'm testing on an older kernel here (3.2.5), so perhaps a more fundamental fix has already made its way into the USB audio stack. I'll arrange to test on a more recent kernel too. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
