From: Mark Brown broonie@kernel.org
stable inclusion from stable-v5.10.115 commit d53d47fadd17a5631cb7e7e5aba8d8d2c0f99bac category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5IZ9C
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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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 Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- sound/soc/meson/aiu-codec-ctrl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/meson/aiu-codec-ctrl.c b/sound/soc/meson/aiu-codec-ctrl.c index 4b773d3e8b07..a807e5007d6e 100644 --- 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(struct snd_kcontrol *kcontrol,
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,