James Stone wrote:
> Ok -from the bisect, the problem of not being able to get to sub
> 64-frames per period starts with:
>
> http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=fc600432cd23e35c85de2ff4468d816d6938a112

This is a merge, which includes this commit: 
<http://git.kernel.org/linus/e9ba389c5ffc>.

> Could this be the offending deletion?
>
> http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/diff/sound/usb/endpoint.c?id=fc600432cd23e35c85de2ff4468d816d6938a112

(There is a corresponding change in pcm.c.)

The commit that you found by bisection got reverted later:
<http://git.kernel.org/linus/015618b902ae>

Please check that the code of "Fix URB cancellation at stream start" is
in your current kernel.


Regards,
Clemens
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