[PATCH 5.15 027/135] ASoC: meson: Fix event generation for AUI CODEC mux

Greg Kroah-Hartman
2022-05-10T14:00:01Z

From: Mark Brown <broonie@kernel.org>

commit fce49921a22262736cdc3cc74fa67915b75e9363 upstream.

The AIU CODEC 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/20220421123803.292063-3-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/aiu-codec-ctrl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/soc/meson/aiu-codec-ctrl.c
+++ b/sound/soc/meson/aiu-codec-ctrl.c
@@ -57,7 +57,7 @@ static int aiu_codec_ctrl_mux_put_enum(s

snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);

- return 0;
+ return 1;
}

static SOC_ENUM_SINGLE_DECL(aiu_hdmi_ctrl_mux_enum, AIU_HDMI_CLK_DATA_CTRL,