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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Mark Brown <broonie@kernel.org>,
        Jerome Brunet <jbrunet@baylibre.com>
Subject: [PATCH 5.4 13/52] ASoC: meson: Fix event generation for G12A tohdmi mux
Date:   Tue, 10 May 2022 15:07:42 +0200
Message-Id: <20220510130730.246649329@linuxfoundation.org>
In-Reply-To: <20220510130729.852544477@linuxfoundation.org>
References: <20220510130729.852544477@linuxfoundation.org>
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From: Mark Brown <broonie@kernel.org>

commit 12131008fc13ff7f7690d170b7a8f72d24fd7d1e upstream.

The G12A tohdmi has a custom put() operation which returns 0 when the value
of the mux changes, meaning that events are not generated for userspace.
Change to return 1 in this case, the function returns early in the case
where there is no change.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20220421123803.292063-4-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 sound/soc/meson/g12a-tohdmitx.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/soc/meson/g12a-tohdmitx.c
+++ b/sound/soc/meson/g12a-tohdmitx.c
@@ -127,7 +127,7 @@ static int g12a_tohdmitx_i2s_mux_put_enu
 
 	snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
 
-	return 0;
+	return 1;
 }
 
 static const struct snd_kcontrol_new g12a_tohdmitx_i2s_mux =