Re: [alsa-devel] [PATCH v2] ASoC: bt-sco: support wide band speech

On Wed, Nov 26, 2014 at 12:30:45PM +0100, Lars-Peter Clausen wrote:

This is modifying a driver global struct with device local data. This is a no-go. Either add second snd_soc_dai_driver with the new rates or add a startup callback and add the constraints using snd_pcm_hw_constraint_list().

Or copy into per-device data before modifying and registering. Probably the second snd_soc_dai_driver is the best option though.