[alsa-devel] [RESENT] [PATCH - Fix Fast Track Ultra series: 44.1/88.1 kHz 1/Fix playback/capture issues and related chrashes at 44100 Hz and 88200 Hz for M-Audio Fast Track Ultra series.

Clemens Ladisch clemens at ladisch.de
Thu Sep 2 11:12:59 CEST 2010

Takashi Iwai wrote:
> I myself find it's OK to apply since it's pretty local change.
> Clemens, what was your objection at that time?

No objection per se, I wanted to find out what descriptor field is
changed by the quirk, and where the crashes come from exactly.  The
latter is still unclear, but it seems a quirk like this is required.

I've committed the patch now.

> > Also, the Interface Class protocol for the device defaults to Vendor 
> > Specific Class, but the driver only recognizes Class 1 or 2. The device 
> > is really Class 1, so we have to force it to reflect this. There are 4 
> > places that we need to set this."

Daniel, this seems to be a regression introduced with the UAC2 changes.
The old driver accepted vendor-specific interfaces, if some quirk forced
it to look at them.


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