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ASoC: madera: Fix event generation for OUT1 demux 

[ Upstream commit e3cabbef3d ]

madera_out1_demux_put returns the value of
snd_soc_dapm_mux_update_power, which returns a 1 if a path was found for
the kcontrol. This is obviously different to the expected return a 1 if
the control was updated value. This results in spurious notifications to
user-space. Update the handling to only return a 1 when the value is
changed.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220623105120.1981154-4-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Charles Keepax 2022-06-23 11:51:18 +01:00 committed by Greg Kroah-Hartman
parent 2308fdb519
commit 0303f460b8
1 changed files with 7 additions and 1 deletions
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8
sound/soc/codecs/madera.c
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@ -618,7 +618,13 @@ int madera_out1_demux_put(struct snd_kcontrol *kcontrol,
end:
snd_soc_dapm_mutex_unlock(dapm);
return snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
ret = snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
if (ret < 0) {
dev_err(madera->dev, "Failed to update demux power state: %d\n", ret);
return ret;
}
return change;
}
EXPORT_SYMBOL_GPL(madera_out1_demux_put);