diff --git a/media/ndk/NdkMediaFormat.cpp b/media/ndk/NdkMediaFormat.cpp
index c1793ce..51f6c78 100644
--- a/media/ndk/NdkMediaFormat.cpp
+++ b/media/ndk/NdkMediaFormat.cpp
@@ -200,8 +200,11 @@
     AString tmp;
     if (mData->mFormat->findString(name, &tmp)) {
         String8 ret(tmp.c_str());
-        mData->mStringCache.add(String8(name), ret);
-        *out = ret.string();
+        ssize_t i = mData->mStringCache.add(String8(name), ret);
+        if (i < 0) {
+            return false;
+        }
+        *out = mData->mStringCache.valueAt(i).string();
         return true;
     }
     return false;
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index cc2d8e8..cb9d700 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -6548,7 +6548,7 @@
     outputDesc->setVolume(
             volumeDb, volumeSource, curves.getStreamTypes(), deviceTypes, delayMs, force);
 
-    if (isVoiceVolSrc || isBtScoVolSrc) {
+    if (outputDesc == mPrimaryOutput && (isVoiceVolSrc || isBtScoVolSrc)) {
         float voiceVolume;
         // Force voice volume to max or mute for Bluetooth SCO as other attenuations are managed by the headset
         if (isVoiceVolSrc) {