Message ID | 1635947547-24391-10-git-send-email-spujar@nvidia.com |
---|---|
State | Superseded |
Headers | show
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Series |
Fix kcontrol put callback in Tegra drivers
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expand
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diff --git a/sound/soc/tegra/tegra210_adx.c b/sound/soc/tegra/tegra210_adx.c index d7c7849..933c450 100644 --- a/sound/soc/tegra/tegra210_adx.c +++ b/sound/soc/tegra/tegra210_adx.c @@ -193,6 +193,9 @@ static int tegra210_adx_put_byte_map(struct snd_kcontrol *kcontrol, struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value;; + if (value == bytes_map[mc->reg]) + return 0; + if (value >= 0 && value <= 255) { /* update byte map and enable slot */ bytes_map[mc->reg] = value;
The kcontrol put callback is expected to return 1 when there is change in HW or when the update is acknowledged by driver. This would ensure that change notifications are sent to subscribed applications. Filter out duplicate updates in ADX driver. Fixes: a99ab6f395a9 ("ASoC: tegra: Add Tegra210 based ADX 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_adx.c | 3 +++ 1 file changed, 3 insertions(+)