[alsa-devel] usb-usx2y: playback fails with Tascam US122 on kernel 3.14

[Takashi Iwai]

At Thu, 21 Aug 2014 17:14:04 +0100,
Dr Nicholas J Bailey wrote:
> 
> On Thursday 21 August 2014 09:02:44 you wrote:
> > At Wed, 20 Aug 2014 18:50:21 +0100,
> > 
> > Dr Nicholas J Bailey wrote:
> > > ...
> > > So the thing is, I can't make any stock kernel work on my Debian laptop,
> > > which means there aren't two points between which to bisect.
> > > 
> > > That's all I've got time for at the moment. I'll append the notes I made
> > > yesterday and today while the builds and tests were going on, just in case
> > > they are any help. At least I have a kernel (3.10.11) that works for now,
> > > but unless somebody who really knows what they are doing is going on the
> > > case, it looks like its just a matter of time before I'll be buying a
> > > whole bunch of new audio interfaces. We have at least 4 or 5 of these
> > > Tascam US-122 boxes, and use them quite a lot, so I am nervously
> > > fingering my wallet... :(
> > Try to build 3.10.11 from linux-stable tree manually and see whether
> > it works.  If yes, there must be a fix between 3.10 and 3.10.11, and
> > you can bisect it easily.
> > 
> > If the manual built 3.10.11 kernel doesn't work, it's most likely a
> > kernel config issue, assuming that Debian doesn't put so many own
> > kernel patches (especially for the sound stuff).
> > 
> > 
> > Takashi
> 
> OK, I don't understand git very well. When I first cloned the kernel repo, I 
> did git tag -l, and I'd swear that there were only tags of the form 
> v<major>.<minor>(-rc[0-9]+)? but now I give the same command again I get tags 
> like v<major>.<minor>.<subminor>(-rc[0-9]+)? That's why I tried to build 3.10 
> and 3.11.

It depends where you clone the git repo from.  If you cloned from
linux-stable tree, it should have contained all 3.10.x stuff.  If you
cloned from Linus tree, it contains only the initial 3.10 and
3.10-rc*, but no 3.10.x stable.


Takashi