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ASoC: es8328: Fix event generation for deemphasis control

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[ Upstream commit 8259610c2e ]

Currently the put() method for the deemphasis control returns 0 when a new
value is written to the control even if the value changed, meaning events
are not generated. Fix this, skip the work of updating the value when it is
unchanged and then return 1 after having done so.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220603123937.4013603-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mark Brown 2022-06-03 14:39:37 +02:00 • committed by Greg Kroah-Hartman
commit a572c74402
1 changed files with 4 additions and 1 deletions
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5
sound/soc/codecs/es8328.c
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@ -161,13 +161,16 @@ static int es8328_put_deemph(struct snd_kcontrol *kcontrol,
if (deemph > 1)
return -EINVAL;
if (es8328->deemph == deemph)
return 0;
ret = es8328_set_deemph(component);
if (ret < 0)
return ret;
es8328->deemph = deemph;
return 0;
return 1;
}