ASoC: wm_adsp: Return whether changed when writing controls

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Functions that update cs_dsp controls need to handle return codes that
indicate whether the control value changed. A return code of 1 indicates
a change, 0 indicates no-change and a negative value is an error
condition.

Acked controls implicitly change value when written so a successful
write shall always report that the value changed.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20221123165811.3014472-3-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Simon Trimmer 2022-11-23 16:58:11 +00:00 • committed by Mark Brown

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sound/soc/codecs/wm_adsp.c

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