[alsa-devel] [PATCH] ASoC: dapm: Use SND_SOC_DAPM_INIT_REG_VAL in SND_SOC_DAPM_MUX

[Mark Brown]

On Fri, Nov 22, 2013 at 10:29:18AM -0700, Stephen Warren wrote:
> From: Stephen Warren <swarren at nvidia.com>
> 
> SND_SOC_DAPM_MUX() doesn't currently initialize the .mask field. This
> results in the mux never affecting HW, since no bits are ever set or
> cleared. Fix SND_SOC_DAPM_MUX() to use SND_SOC_DAPM_INIT_REG_VAL() to
> set up the reg, shift, on_val, and off_val fields like almost all other
> SND_SOC_xxx() macros. It looks like this was a "typo" in the fixed
> commit linked below.

Hrm.  Why has nobody else noticed this?  I've been doing plenty of
testing that involved changing muxes...  The patch and reasoning makes
sense but I can't immediately see why any of the testing I've been doing
recently would've worked without it since it all relies on muxes being
configured to make any noise.
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