[alsa-devel] A plea for help on mixer support for Fast Track Ultra (8R)

[Daniel Mack]

On Fri, May 20, 2011 at 1:14 PM, Felix Homann <linuxaudio at showlabor.de> wrote:
> Sorry, here are the first lines:
>
> [ 4104.510080] usb 1-3: new high speed USB device using ehci_hcd and address
> 2
> [ 4104.661745] usb 1-3: config 1 interface 3 altsetting 0 bulk endpoint 0x7
> has invalid maxpacket 8
> [ 4104.661750] usb 1-3: config 1 interface 3 altsetting 0 bulk endpoint 0x87
> has invalid maxpacket 8
> [ 4104.824137] BUG: unable to handle kernel NULL pointer dereference at
> 0000000000000020
> [ 4104.824147] IP: [<ffffffffa04b0119>] snd_usb_mixer_controls+0x49/0x1a0
> [snd_usb_audio]

Ok, chip->ctrl_intf needs to be initialized. Next try ...


Daniel
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