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    Subject[PATCH 5.10 19/70] ASoC: meson: Fix event generation for AUI ACODEC mux
    Date
    From: Mark Brown <broonie@kernel.org>

    commit 2e3a0d1bfa95b54333f7add3e50e288769373873 upstream.

    The AIU ACODEC 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/20220421123803.292063-2-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-acodec-ctrl.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/sound/soc/meson/aiu-acodec-ctrl.c
    +++ b/sound/soc/meson/aiu-acodec-ctrl.c
    @@ -58,7 +58,7 @@ static int aiu_acodec_ctrl_mux_put_enum(

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

    - return 0;
    + return 1;
    }

    static SOC_ENUM_SINGLE_DECL(aiu_acodec_ctrl_mux_enum, AIU_ACODEC_CTRL,

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