From: Charles Keepax Date: Tue, 28 Jun 2022 15:34:08 +0000 (+0100) Subject: ASoC: cs47l92: Fix event generation for OUT1 demux X-Git-Tag: baikal/mips/sdk6.1~5330^2~7^2~12 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=8a2629768330d70f7d7cc31f2783361434a0fb40;p=kernel.git ASoC: cs47l92: Fix event generation for OUT1 demux cs47l92_put_demux 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 Link: https://lore.kernel.org/r/20220628153409.3266932-3-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown --- diff --git a/sound/soc/codecs/cs47l92.c b/sound/soc/codecs/cs47l92.c index a1b8dcdb9f7b7..444026b7d54b3 100644 --- a/sound/soc/codecs/cs47l92.c +++ b/sound/soc/codecs/cs47l92.c @@ -119,7 +119,13 @@ static int cs47l92_put_demux(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; } static SOC_ENUM_SINGLE_DECL(cs47l92_outdemux_enum,