[alsa-devel] M-Audio FastTrack C400

[Daniel Mack]

On 04/19/2012 10:53 AM, Clemens Ladisch wrote:
> Chris Cavey wrote:
>>  snd-usb-audio: probe of 1-1:1.1 failed with error -5
>>  snd-usb-audio: probe of 1-1:1.2 failed with error -5
>>  snd-usb-audio: probe of 1-1:1.3 failed with error -5
> 
> Are there no other messages immediately before this?
> 
> Daniel, are there places where the code aborts without
> print an error message?

Yes, there are in fact some. -5 means -EIO, and the module probe will
fail with this error code in case snd_usb_audio_probe() returns NULL.
Chris, can you trace this functions in sound/usb/card.c and see where it
bails?



Daniel