BQ: Avoid unnecessary calls to consumer listener

Try to avoid unnecessary calls to the consumer listener's
onBuffersReleased() since they can potentially deadlock.

Bug 28254168

Change-Id: Ib064e5ebe1403a1028589342b3c33e6f40bb54a9

1 files changed, 4 insertions, 0 deletions

diff --git a/libs/gui/BufferQueueConsumer.cpp b/libs/gui/BufferQueueConsumer.cpp
index b591c4e8ba..cbc88932ac 100644
--- a/libs/gui/BufferQueueConsumer.cpp
+++ b/libs/gui/BufferQueueConsumer.cpp
@@ -622,6 +622,10 @@ status_t BufferQueueConsumer::setMaxAcquiredBufferCount(
             return NO_INIT;
         }
 
+        if (maxAcquiredBuffers == mCore->mMaxAcquiredBufferCount) {
+            return NO_ERROR;
+        }
+
         // The new maxAcquiredBuffers count should not be violated by the number
         // of currently acquired buffers
         int acquiredCount = 0;