From: Shengjiu Wang Date: Wed, 1 Apr 2026 09:42:23 +0000 (+0800) Subject: ASoC: fsl_xcvr: Fix event generation in fsl_xcvr_mode_put() X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=64a496ba976324615b845d60739dfcdae3d57434;p=thirdparty%2Fkernel%2Flinux.git ASoC: fsl_xcvr: Fix event generation in fsl_xcvr_mode_put() ALSA controls should return 1 if the value in the control changed but the control put operation fsl_xcvr_mode_put() only returns 0 or a negative error code, causing ALSA to not generate any change events. Add a suitable check in the function before updating the mode variable. Fixes: 28564486866f ("ASoC: fsl_xcvr: Add XCVR ASoC CPU DAI driver") Signed-off-by: Shengjiu Wang Link: https://patch.msgid.link/20260401094226.2900532-9-shengjiu.wang@nxp.com Signed-off-by: Mark Brown --- diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c index 008e45009c83f..d7a823384c08a 100644 --- a/sound/soc/fsl/fsl_xcvr.c +++ b/sound/soc/fsl/fsl_xcvr.c @@ -225,10 +225,17 @@ static int fsl_xcvr_mode_put(struct snd_kcontrol *kcontrol, struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai); struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int *item = ucontrol->value.enumerated.item; + int val = snd_soc_enum_item_to_val(e, item[0]); struct snd_soc_card *card = dai->component->card; struct snd_soc_pcm_runtime *rtd; + int ret; + + if (val < FSL_XCVR_MODE_SPDIF || val > FSL_XCVR_MODE_EARC) + return -EINVAL; - xcvr->mode = snd_soc_enum_item_to_val(e, item[0]); + ret = (xcvr->mode != val); + + xcvr->mode = val; fsl_xcvr_activate_ctl(dai, fsl_xcvr_arc_mode_kctl.name, (xcvr->mode == FSL_XCVR_MODE_ARC)); @@ -238,7 +245,7 @@ static int fsl_xcvr_mode_put(struct snd_kcontrol *kcontrol, rtd = snd_soc_get_pcm_runtime(card, card->dai_link); rtd->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count = (xcvr->mode == FSL_XCVR_MODE_SPDIF ? 1 : 0); - return 0; + return ret; } static int fsl_xcvr_mode_get(struct snd_kcontrol *kcontrol,