[PATCH v1 4/4] ASoC: ops: Fix stereo change notifications in snd_soc_put_xr_sx()

[Mark Brown]

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 at kernel.org>
Cc: stable at vger.kernel.org
---
 sound/soc/soc-ops.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index fefd4f34cbc1..6b922d12afb5 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -874,6 +874,7 @@ int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
 	unsigned long mask = (1UL<<mc->nbits)-1;
 	long max = mc->max;
 	long val = ucontrol->value.integer.value[0];
+	int ret = 0;
 	unsigned int i;
 
 	if (invert)
@@ -886,9 +887,11 @@ int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
 							regmask, regval);
 		if (err < 0)
 			return err;
+		if (err > 0)
+			ret = err;
 	}
 
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(snd_soc_put_xr_sx);
 
-- 
2.30.2