diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
index 60c645a..47c46d6 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerDecoder.cpp
@@ -478,10 +478,13 @@
 
         if (mNativeWindow != NULL) {
             // reconnect to surface as MediaCodec disconnected from it
-            CHECK_EQ((int)NO_ERROR,
+            status_t error =
                     native_window_api_connect(
                             mNativeWindow->getNativeWindow().get(),
-                            NATIVE_WINDOW_API_MEDIA));
+                            NATIVE_WINDOW_API_MEDIA);
+            ALOGW_IF(error != NO_ERROR,
+                    "[%s] failed to connect to native window, error=%d",
+                    mComponentName.c_str(), error);
         }
         mComponentName = "decoder";
     }
diff --git a/media/libstagefright/ACodec.cpp b/media/libstagefright/ACodec.cpp
index b44d5cc..e4e463a 100644
--- a/media/libstagefright/ACodec.cpp
+++ b/media/libstagefright/ACodec.cpp
@@ -813,7 +813,10 @@
 
     for (OMX_U32 i = cancelStart; i < cancelEnd; i++) {
         BufferInfo *info = &mBuffers[kPortIndexOutput].editItemAt(i);
-        cancelBufferToNativeWindow(info);
+        status_t error = cancelBufferToNativeWindow(info);
+        if (err == 0) {
+            err = error;
+        }
     }
 
     return err;
@@ -888,11 +891,12 @@
     int err = mNativeWindow->cancelBuffer(
         mNativeWindow.get(), info->mGraphicBuffer.get(), -1);
 
-    CHECK_EQ(err, 0);
+    ALOGW_IF(err != 0, "[%s] can not return buffer %u to native window",
+            mComponentName.c_str(), info->mBufferID);
 
     info->mStatus = BufferInfo::OWNED_BY_NATIVE_WINDOW;
 
-    return OK;
+    return err;
 }
 
 ACodec::BufferInfo *ACodec::dequeueBufferFromNativeWindow() {
@@ -992,7 +996,7 @@
 
     if (portIndex == kPortIndexOutput && mNativeWindow != NULL
             && info->mStatus == BufferInfo::OWNED_BY_US) {
-        CHECK_EQ((status_t)OK, cancelBufferToNativeWindow(info));
+        cancelBufferToNativeWindow(info);
     }
 
     CHECK_EQ(mOMX->freeBuffer(