From 2b7c46369f09c358164d31d17e5695185403185e Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@kernel.org>
Date: Tue, 1 Feb 2022 15:56:29 +0000
Subject: [PATCH] ASoC: ops: Fix stereo change notifications in snd_soc_put_xr_sx()
Git-commit: 2b7c46369f09c358164d31d17e5695185403185e
Patch-mainline: v5.17-rc5
References: git-fixes

When writing out a stereo control we discard the change notification from
the first channel, meaning that events are only generated based on changes
to the second channel. Ensure that we report a change if either channel
has changed.

Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220201155629.120510-5-broonie@kernel.org
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/soc-ops.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -895,6 +895,7 @@ int snd_soc_put_xr_sx(struct snd_kcontro
 	unsigned long mask = (1UL<<mc->nbits)-1;
 	long max = mc->max;
 	long val = ucontrol->value.integer.value[0];
+	int ret = 0;
 	unsigned int i, regval, regmask;
 	int err;
 
@@ -910,9 +911,11 @@ int snd_soc_put_xr_sx(struct snd_kcontro
 				regmask, regval);
 		if (err < 0)
 			return err;
+		if (err > 0)
+			ret = err;
 	}
 
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);