[alsa-devel] [PATCH v5] ALSA: usb: Work around CM6631 sample rate change bug

Clemens Ladisch clemens at ladisch.de
Wed Mar 27 11:09:01 CET 2013

Torstein Hegge wrote:
> The C-Media CM6631 USB receiver doesn't respond to changes in sample rate
> while the interface is active. The same behavior is observed in other UAC2
> hardware like the VIA VT1731.

Might it be possible that these devices have reset the interface (see
UAC2 section 3.16.3), and that the driver hasn't noticed this because it
doesn't handle Active Alternate Setting Control interrupts?


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