diff --git a/amp/src/service/sound/src/sound_hdmi_mgr.c b/amp/src/service/sound/src/sound_hdmi_mgr.c
index 55051b2..5bdd01e 100755
--- a/amp/src/service/sound/src/sound_hdmi_mgr.c
+++ b/amp/src/service/sound/src/sound_hdmi_mgr.c
@@ -786,11 +786,17 @@ HRESULT snd_hdmi_mgr_set_format(SOUND_MANAGER *pSndMgr, UINT32 Format, BOOL bPlu
 
     SNDSRV_ENTER();
     SNDSINK_CHK_NULL(pSndMgr);
-    SNDLOGW("LastSetupPortIdx %d,"
+    SNDLOGE("LastSetupPortIdx %d,"
             " UserHdmiFmt0x%x, RealHdmiFmt 0x%x, Format %x, bPlug=%d\n",
             pSndMgr->uiLastSetupPortIdx,
             pSndMgr->UserHdmiFmt, pSndMgr->RealHdmiFmt, Format, bPlug);
 
+    /* when user prefer format,real format and wish format is identical, do nothing */
+    if( (pSndMgr->UserHdmiFmt==pSndMgr->RealHdmiFmt) && (pSndMgr->UserHdmiFmt==Format) ){
+        SNDLOGE("Ignore the request when all cases are identical");
+        return SUCCESS;
+    }
+
     AmpMemClear(&stHdmiDataCfg, sizeof(HDMI_DATA_CFG));
     AmpMemClear(&stCapHdmiDataCfg, sizeof(HDMI_DATA_CFG));