[PATCH v2 10/10] ASoC: tegra: Fix kcontrol put callback in Mixer

Sameer Pujar
2021-11-03T13:53:41Z

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Fixes: 05bb3d5ec64a ("ASoC: tegra: Add Tegra210 based Mixer driver")
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Suggested-by: Jaroslav Kysela <perex@perex.cz>
Suggested-by: Mark Brown <broonie@kernel.org>
---
sound/soc/tegra/tegra210_mixer.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/sound/soc/tegra/tegra210_mixer.c b/sound/soc/tegra/tegra210_mixer.c
index 55e6177..d2d1946 100644
--- a/sound/soc/tegra/tegra210_mixer.c
+++ b/sound/soc/tegra/tegra210_mixer.c
@@ -210,6 +210,9 @@ static int tegra210_mixer_put_gain(struct snd_kcontrol *kcontrol,
id = (reg - TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_0) /
TEGRA210_MIXER_GAIN_CFG_RAM_ADDR_STRIDE;

+ if (mixer->gain_value[id] == ucontrol->value.integer.value[0])
+ return 0;
+
mixer->gain_value[id] = ucontrol->value.integer.value[0];

err = tegra210_mixer_configure_gain(cmpnt, id, instant_gain);
--
2.7.4