Simplify RecordTrack::stop()

Change-Id: Ib959c1e9dc9544d12277ce11bea445118b2e0521
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index f27d908..e2e023a 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -4031,8 +4031,9 @@
     }
 }
 
-bool AudioFlinger::RecordThread::stop_l(RecordThread::RecordTrack* recordTrack) {
+bool AudioFlinger::RecordThread::stop(RecordThread::RecordTrack* recordTrack) {
     ALOGV("RecordThread::stop");
+    AutoMutex _l(mLock);
     if (recordTrack != mActiveTrack.get() || recordTrack->mState == TrackBase::PAUSING) {
         return false;
     }
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 365c790..4c969d8 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -747,7 +747,7 @@
 
             // ask the thread to stop the specified track, and
             // return true if the caller should then do it's part of the stopping process
-            bool        stop_l(RecordTrack* recordTrack);
+            bool        stop(RecordTrack* recordTrack);
 
             void        dump(int fd, const Vector<String16>& args);
             AudioStreamIn* clearInput();
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index d424e16..1df333f 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -1656,12 +1656,7 @@
     sp<ThreadBase> thread = mThread.promote();
     if (thread != 0) {
         RecordThread *recordThread = (RecordThread *)thread.get();
-        recordThread->mLock.lock();
-        bool doStop = recordThread->stop_l(this);
-        if (doStop) {
-        }
-        recordThread->mLock.unlock();
-        if (doStop) {
+        if (recordThread->stop(this)) {
             AudioSystem::stopInput(recordThread->id());
         }
     }