From: Sameer Pujar Date: Thu, 18 Nov 2021 07:07:06 +0000 (+0530) Subject: ASoC: tegra: Fix kcontrol put callback in AHUB X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f50dcc9d14f5f9e0edee70a639b00328512cc7a4;p=linux.git ASoC: tegra: Fix kcontrol put callback in AHUB commit a4e37950c9e9b126f9cbee79b8ab94a94646dcf1 upstream. 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 AHUB driver accordingly. Fixes: 16e1bcc2caf4 ("ASoC: tegra: Add Tegra210 based AHUB driver") Signed-off-by: Sameer Pujar Suggested-by: Jaroslav Kysela Suggested-by: Mark Brown Reviewed-by: Takashi Iwai Link: https://lore.kernel.org/r/1637219231-406-12-git-send-email-spujar@nvidia.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- diff --git a/sound/soc/tegra/tegra210_ahub.c b/sound/soc/tegra/tegra210_ahub.c index 66287a7c9865d..1b2f7cb8c6adc 100644 --- a/sound/soc/tegra/tegra210_ahub.c +++ b/sound/soc/tegra/tegra210_ahub.c @@ -62,6 +62,7 @@ static int tegra_ahub_put_value_enum(struct snd_kcontrol *kctl, unsigned int *item = uctl->value.enumerated.item; unsigned int value = e->values[item[0]]; unsigned int i, bit_pos, reg_idx = 0, reg_val = 0; + int change = 0; if (item[0] >= e->items) return -EINVAL; @@ -86,12 +87,14 @@ static int tegra_ahub_put_value_enum(struct snd_kcontrol *kctl, /* Update widget power if state has changed */ if (snd_soc_component_test_bits(cmpnt, update[i].reg, - update[i].mask, update[i].val)) - snd_soc_dapm_mux_update_power(dapm, kctl, item[0], e, - &update[i]); + update[i].mask, + update[i].val)) + change |= snd_soc_dapm_mux_update_power(dapm, kctl, + item[0], e, + &update[i]); } - return 0; + return change; } static struct snd_soc_dai_driver tegra210_ahub_dais[] = {