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. Update the DSPK driver accordingly.
Fixes: 327ef6470266 ("ASoC: tegra: Add Tegra186 based DSPK driver") Suggested-by: Jaroslav Kysela perex@perex.cz Suggested-by: Mark Brown broonie@kernel.org Signed-off-by: Sameer Pujar spujar@nvidia.com --- sound/soc/tegra/tegra186_dspk.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/sound/soc/tegra/tegra186_dspk.c b/sound/soc/tegra/tegra186_dspk.c index 8ee9a77..3b1bdb7 100644 --- a/sound/soc/tegra/tegra186_dspk.c +++ b/sound/soc/tegra/tegra186_dspk.c @@ -67,8 +67,10 @@ static int tegra186_dspk_put_control(struct snd_kcontrol *kcontrol, dspk->mono_to_stereo = val; else if (strstr(kcontrol->id.name, "Stereo To Mono")) dspk->stereo_to_mono = val; + else + return 0;
- return 0; + return 1; }
static int __maybe_unused tegra186_dspk_runtime_suspend(struct device *dev)