1 files changed, 39 insertions, 9 deletions

diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index b27e89ff6a16..5be32c37bb8a 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -336,7 +336,7 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 	if (ucontrol->value.integer.value[0] < 0)
 		return -EINVAL;
 	val = ucontrol->value.integer.value[0];
-	if (mc->platform_max && ((int)val + min) > mc->platform_max)
+	if (mc->platform_max && val > mc->platform_max)
 		return -EINVAL;
 	if (val > max - min)
 		return -EINVAL;
@@ -349,7 +349,7 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 		if (ucontrol->value.integer.value[1] < 0)
 			return -EINVAL;
 		val2 = ucontrol->value.integer.value[1];
-		if (mc->platform_max && ((int)val2 + min) > mc->platform_max)
+		if (mc->platform_max && val2 > mc->platform_max)
 			return -EINVAL;
 		if (val2 > max - min)
 			return -EINVAL;
@@ -502,17 +502,16 @@ int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
 {
 	struct soc_mixer_control *mc =
 		(struct soc_mixer_control *)kcontrol->private_value;
-	int platform_max;
-	int min = mc->min;
+	int max;
 
-	if (!mc->platform_max)
-		mc->platform_max = mc->max;
-	platform_max = mc->platform_max;
+	max = mc->max - mc->min;
+	if (mc->platform_max && mc->platform_max < max)
+		max = mc->platform_max;
 
 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 	uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
 	uinfo->value.integer.min = 0;
-	uinfo->value.integer.max = platform_max - min;
+	uinfo->value.integer.max = max;
 
 	return 0;
 }
@@ -639,6 +638,37 @@ int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
 }
 EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range);
 
+static int snd_soc_clip_to_platform_max(struct snd_kcontrol *kctl)
+{
+	struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value;
+	struct snd_ctl_elem_value *uctl;
+	int ret;
+
+	if (!mc->platform_max)
+		return 0;
+
+	uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
+	if (!uctl)
+		return -ENOMEM;
+
+	ret = kctl->get(kctl, uctl);
+	if (ret < 0)
+		goto out;
+
+	if (uctl->value.integer.value[0] > mc->platform_max)
+		uctl->value.integer.value[0] = mc->platform_max;
+
+	if (snd_soc_volsw_is_stereo(mc) &&
+	    uctl->value.integer.value[1] > mc->platform_max)
+		uctl->value.integer.value[1] = mc->platform_max;
+
+	ret = kctl->put(kctl, uctl);
+
+out:
+	kfree(uctl);
+	return ret;
+}
+
 /**
  * snd_soc_limit_volume - Set new limit to an existing volume control.
  *
@@ -663,7 +693,7 @@ int snd_soc_limit_volume(struct snd_soc_card *card,
 		struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value;
 		if (max <= mc->max - mc->min) {
 			mc->platform_max = max;
-			ret = 0;
+			ret = snd_soc_clip_to_platform_max(kctl);
 		}
 	}
 	return ret;