diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 077fa26..323ce0e 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -425,6 +425,8 @@
 
     bool        btNrecIsOff() const { return mBtNrecIsOff.load(); }
 
+    void             lock() ACQUIRE(mLock) { mLock.lock(); }
+    void             unlock() RELEASE(mLock) { mLock.unlock(); }
 
 private:
 
diff --git a/services/audioflinger/PatchPanel.cpp b/services/audioflinger/PatchPanel.cpp
index 3b428bb..d25d46f 100644
--- a/services/audioflinger/PatchPanel.cpp
+++ b/services/audioflinger/PatchPanel.cpp
@@ -135,6 +135,10 @@
 status_t AudioFlinger::PatchPanel::createAudioPatch(const struct audio_patch *patch,
                                    audio_patch_handle_t *handle,
                                    bool endpointPatch)
+ //unlocks AudioFlinger::mLock when calling ThreadBase::sendCreateAudioPatchConfigEvent
+ //to avoid deadlocks if the thread loop needs to acquire AudioFlinger::mLock
+ //before processing the create patch request.
+ NO_THREAD_SAFETY_ANALYSIS
 {
     if (handle == NULL || patch == NULL) {
         return BAD_VALUE;
@@ -245,7 +249,6 @@
                         status = INVALID_OPERATION;
                         goto exit;
                     }
-
                     sp<ThreadBase> thread =
                             mAudioFlinger.checkPlaybackThread_l(patch->sources[1].ext.mix.handle);
                     if (thread == 0) {
@@ -356,11 +359,12 @@
                             goto exit;
                         }
                     }
+                    mAudioFlinger.unlock();
                     status = thread->sendCreateAudioPatchConfigEvent(patch, &halHandle);
+                    mAudioFlinger.lock();
                     if (status == NO_ERROR) {
                         newPatch.setThread(thread);
                     }
-
                     // remove stale audio patch with same input as sink if any
                     for (auto& iter : mPatches) {
                         if (iter.second.mAudioPatch.sinks[0].ext.mix.handle == thread->id()) {
@@ -422,7 +426,9 @@
                 mAudioFlinger.updateOutDevicesForRecordThreads_l(devices);
             }
 
+            mAudioFlinger.unlock();
             status = thread->sendCreateAudioPatchConfigEvent(patch, &halHandle);
+            mAudioFlinger.lock();
             if (status == NO_ERROR) {
                 newPatch.setThread(thread);
             }
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 76c9ad8..de0abf0 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -4976,7 +4976,7 @@
         const NBAIO_Format offersFast[1] = {format};
         size_t numCounterOffersFast = 0;
 #if !LOG_NDEBUG
-        ssize_t index =
+        index =
 #else
         (void)
 #endif
@@ -7874,15 +7874,15 @@
         Pipe *pipe = new Pipe(pipeFramesP2, format, pipeBuffer);
         const NBAIO_Format offersFast[1] = {format};
         size_t numCounterOffersFast = 0;
-        [[maybe_unused]] ssize_t index = pipe->negotiate(offersFast, std::size(offersFast),
+        [[maybe_unused]] ssize_t index2 = pipe->negotiate(offersFast, std::size(offersFast),
                 nullptr /* counterOffers */, numCounterOffersFast);
-        ALOG_ASSERT(index == 0);
+        ALOG_ASSERT(index2 == 0);
         mPipeSink = pipe;
         PipeReader *pipeReader = new PipeReader(*pipe);
         numCounterOffersFast = 0;
-        index = pipeReader->negotiate(offersFast, std::size(offersFast),
+        index2 = pipeReader->negotiate(offersFast, std::size(offersFast),
                 nullptr /* counterOffers */, numCounterOffersFast);
-        ALOG_ASSERT(index == 0);
+        ALOG_ASSERT(index2 == 0);
         mPipeSource = pipeReader;
         mPipeFramesP2 = pipeFramesP2;
         mPipeMemory = pipeMemory;
@@ -9297,7 +9297,7 @@
     if (stepCount == 0) {
         return;
     }
-    ALOG_ASSERT(stepCount <= mRsmpInUnrel);
+    ALOG_ASSERT(stepCount <= (int32_t)mRsmpInUnrel);
     mRsmpInUnrel -= stepCount;
     mRsmpInFront = audio_utils::safe_add_overflow(mRsmpInFront, stepCount);
     buffer->raw = NULL;