AudioFlinger: do not cache audio device when 0.

AudioFlinger should not cache the audio device
passed to the audio HAL when it is AUDIO_DEVICE_NONE
but keep previous valid selection instead.

Bug: 9323399.
Change-Id: I6f9480e55a21be4115453e6a5eebc5cf2536c476

2 files changed, 6 insertions, 4 deletions

diff --git a/services/audioflinger/Effects.cpp b/services/audioflinger/Effects.cpp
index d66294c..942ea35 100644
--- a/services/audioflinger/Effects.cpp
+++ b/services/audioflinger/Effects.cpp
@@ -680,7 +680,7 @@ status_t AudioFlinger::EffectModule::setDevice(audio_devices_t device)
         return mStatus;
     }
     status_t status = NO_ERROR;
-    if (device && (mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) {
+    if ((mDescriptor.flags & EFFECT_FLAG_DEVICE_MASK) == EFFECT_FLAG_DEVICE_IND) {
         status_t cmdStatus;
         uint32_t size = sizeof(status_t);
         uint32_t cmd = audio_is_output_devices(device) ? EFFECT_CMD_SET_DEVICE :
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 539bb4f..6422b23 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -2992,9 +2992,11 @@ bool AudioFlinger::MixerThread::checkForNewParameters_l()
 
             // forward device change to effects that have requested to be
             // aware of attached audio device.
-            mOutDevice = value;
-            for (size_t i = 0; i < mEffectChains.size(); i++) {
-                mEffectChains[i]->setDevice_l(mOutDevice);
+            if (value != AUDIO_DEVICE_NONE) {
+                mOutDevice = value;
+                for (size_t i = 0; i < mEffectChains.size(); i++) {
+                    mEffectChains[i]->setDevice_l(mOutDevice);
+                }
             }
         }