diff --git a/model/audio/common/src/audio_accessory_base.c b/model/audio/common/src/audio_accessory_base.c
index 7e79e56f..e7c4f323 100755
--- a/model/audio/common/src/audio_accessory_base.c
+++ b/model/audio/common/src/audio_accessory_base.c
@@ -26,6 +26,12 @@ uint16_t g_i2cDevAddr, g_i2cBusNumber;
 struct AudioRegCfgGroupNode **g_audioRegCfgGroupNode = NULL;
 struct AudioKcontrol *g_audioControls = NULL;
 
+static const char *g_audioAccessoryControlsList[AUDIO_CTRL_LIST_MAX] = {
+    "Main Playback Volume", "Main Capture Volume",
+    "Playback Mute", "Capture Mute", "Mic Left Gain",
+    "Mic Right Gain", "External Codec Enable",
+    "Internally Codec Enable", "Render Channel Mode", "Captrue Channel Mode"
+};
 /*
  * release I2C object public function
  */
@@ -303,7 +309,7 @@ int32_t AccessoryDeviceCfgGet(struct AccessoryData *accessoryData,
     int32_t ret;
     int32_t index;
     int32_t audioCfgCtrlCount;
-
+    struct AudioControlConfig *ctlcfgItem;
     ret = (accessoryData == NULL || accessoryData->regConfig == NULL || accessoryTransferData == NULL);
     if (ret) {
         AUDIO_DRIVER_LOG_ERR("input para is NULL.");
@@ -320,7 +326,7 @@ int32_t AccessoryDeviceCfgGet(struct AccessoryData *accessoryData,
         AUDIO_DRIVER_LOG_ERR("parsing params is NULL.");
         return HDF_FAILURE;
     }
-    struct AudioControlConfig *ctlcfgItem = g_audioRegCfgGroupNode[AUDIO_CTRL_CFG_GROUP]->ctrlCfgItem;
+    ctlcfgItem = g_audioRegCfgGroupNode[AUDIO_CTRL_CFG_GROUP]->ctrlCfgItem;
     audioCfgCtrlCount = g_audioRegCfgGroupNode[AUDIO_CTRL_CFG_GROUP]->itemNum;
     g_audioControls = (struct AudioKcontrol *)OsalMemCalloc(audioCfgCtrlCount * sizeof(struct AudioKcontrol));
     accessoryTransferData->accessoryRegCfgGroupNode = g_audioRegCfgGroupNode;
@@ -328,7 +334,7 @@ int32_t AccessoryDeviceCfgGet(struct AccessoryData *accessoryData,
     accessoryTransferData->accessoryControls = g_audioControls;
     for (index = 0; index < audioCfgCtrlCount; index++) {
         g_audioControls[index].iface = ctlcfgItem[index].iface;
-        g_audioControls[index].name  = g_audioControlsList[ctlcfgItem[index].arrayIndex];
+        g_audioControls[index].name  = g_audioAccessoryControlsList[ctlcfgItem[index].arrayIndex];
         g_audioControls[index].Info  = AudioInfoCtrlOps;
         g_audioControls[index].privateValue =
             (unsigned long)(uintptr_t)(void*)(&g_audioRegCfgGroupNode[AUDIO_CTRL_PATAM_GROUP]->regCfgItem[index]);
@@ -344,6 +350,7 @@ int32_t AccessoryDeviceCfgGet(struct AccessoryData *accessoryData,
 int32_t AccessoryDeviceCtrlRegInit(void)
 {
     int32_t ret, i;
+    struct AudioAddrConfig *initCfg;
     // Set codec control register(00h-14h) default value
     ret = (g_audioRegCfgGroupNode == NULL || g_audioRegCfgGroupNode[AUDIO_INIT_GROUP] == NULL
            || g_audioRegCfgGroupNode[AUDIO_INIT_GROUP]->addrCfgItem == NULL);
@@ -351,7 +358,7 @@ int32_t AccessoryDeviceCtrlRegInit(void)
         AUDIO_DRIVER_LOG_ERR("g_audioRegCfgGroupNode[AUDIO_INIT_GROUP] is NULL.");
         return HDF_FAILURE;
     }
-    struct AudioAddrConfig *initCfg = g_audioRegCfgGroupNode[AUDIO_INIT_GROUP]->addrCfgItem;
+    initCfg = g_audioRegCfgGroupNode[AUDIO_INIT_GROUP]->addrCfgItem;
     for (i = 0; i < g_audioRegCfgGroupNode[AUDIO_INIT_GROUP]->itemNum; i++) {
         AUDIO_DRIVER_LOG_DEBUG("i=%d, Addr = [0x%2x]", i, initCfg[i].addr);
         ret = AccessoryI2cReadWrite(&initCfg[i], 0);
diff --git a/model/audio/common/src/audio_codec_base.c b/model/audio/common/src/audio_codec_base.c
index ee753581..bef2baa1 100755
--- a/model/audio/common/src/audio_codec_base.c
+++ b/model/audio/common/src/audio_codec_base.c
@@ -13,6 +13,21 @@
 
 #define HDF_LOG_TAG audio_codec_base
 
+static char *g_audioSapmCompNameList[AUDIO_SAPM_COMP_NAME_LIST_MAX] = {
+    "ADCL", "ADCR", "DACL", "DACR", "LPGA", "RPGA", "SPKL", "SPKR", "MIC"
+};
+
+static char *g_audioSapmCfgNameList[AUDIO_SAPM_CFG_NAME_LIST_MAX] = {
+    "LPGA MIC Switch", "RPGA MIC Switch", "Dacl enable", "Dacr enable"
+};
+
+static const char *g_audioCodecControlsList[AUDIO_CTRL_LIST_MAX] = {
+    "Main Playback Volume", "Main Capture Volume",
+    "Playback Mute", "Capture Mute", "Mic Left Gain",
+    "Mic Right Gain", "External Codec Enable",
+    "Internally Codec Enable", "Render Channel Mode", "Captrue Channel Mode"
+};
+
 int32_t CodecGetServiceName(const struct HdfDeviceObject *device, const char **drvCodecName)
 {
     const struct DeviceResourceNode *node = NULL;
@@ -124,22 +139,25 @@ static int32_t SapmCtrlToSapmComp(struct AudioSapmComponent *sapmComponents,
 static int32_t CodecSetSapmConfigInfo(struct CodecData *codeData, struct AudioRegCfgGroupNode **regCfgGroup)
 {
     uint16_t index;
-
+    struct AudioSapmCtrlConfig *sapmCompItem;
+    struct AudioControlConfig  *sapmCtrlItem;
+    struct AudioMixerControl   *ctlSapmRegCfgItem;
+    struct AudioKcontrol *audioSapmControls;
     if (codeData == NULL || regCfgGroup == NULL) {
         AUDIO_DRIVER_LOG_ERR("input para is NULL.");
         return HDF_FAILURE;
     }
 
-    struct AudioSapmCtrlConfig *sapmCompItem      = regCfgGroup[AUDIO_SAPM_COMP_GROUP]->sapmCompItem;
-    struct AudioControlConfig  *sapmCtrlItem      = regCfgGroup[AUDIO_SAPM_CFG_GROUP]->ctrlCfgItem;
-    struct AudioMixerControl   *ctlSapmRegCfgItem = regCfgGroup[AUDIO_CTRL_SAPM_PATAM_GROUP]->regCfgItem;
+    sapmCompItem = regCfgGroup[AUDIO_SAPM_COMP_GROUP]->sapmCompItem;
+    sapmCtrlItem = regCfgGroup[AUDIO_SAPM_CFG_GROUP]->ctrlCfgItem;
+    ctlSapmRegCfgItem = regCfgGroup[AUDIO_CTRL_SAPM_PATAM_GROUP]->regCfgItem;
 
     if (sapmCompItem == NULL || sapmCtrlItem == NULL || ctlSapmRegCfgItem == NULL) {
         AUDIO_DRIVER_LOG_ERR("sapmCompItem, sapmCtrlItem, ctlSapmRegCfgItem is NULL.");
         return HDF_FAILURE;
     }
 
-    struct AudioKcontrol *audioSapmControls = (struct AudioKcontrol *)OsalMemCalloc(
+    audioSapmControls = (struct AudioKcontrol *)OsalMemCalloc(
         regCfgGroup[AUDIO_SAPM_CFG_GROUP]->itemNum * sizeof(struct AudioKcontrol));
     if (audioSapmControls == NULL) {
         AUDIO_DRIVER_LOG_ERR("OsalMemCalloc failed.");
@@ -181,14 +199,17 @@ static int32_t CodecSetSapmConfigInfo(struct CodecData *codeData, struct AudioRe
 int32_t CodecSetConfigInfo(struct CodecData *codeData,  struct DaiData *daiData)
 {
     uint16_t index;
-
+    struct AudioIdInfo   *audioIdInfo;
+    struct AudioRegCfgGroupNode **regCfgGroup;
+    struct AudioControlConfig  *compItem;
+    struct AudioMixerControl   *ctlRegCfgItem;
     if (codeData == NULL || daiData == NULL || codeData->regConfig == NULL) {
         AUDIO_DRIVER_LOG_ERR("input para is NULL.");
         return HDF_FAILURE;
     }
 
-    struct AudioIdInfo   *audioIdInfo = &(codeData->regConfig->audioIdInfo);
-    struct AudioRegCfgGroupNode **regCfgGroup = codeData->regConfig->audioRegParams;
+    audioIdInfo = &(codeData->regConfig->audioIdInfo);
+    regCfgGroup = codeData->regConfig->audioRegParams;
     daiData->regCfgGroup = regCfgGroup;
     codeData->regCfgGroup = regCfgGroup;
     if (audioIdInfo == NULL || regCfgGroup == NULL) {
@@ -196,8 +217,8 @@ int32_t CodecSetConfigInfo(struct CodecData *codeData,  struct DaiData *daiData)
         return HDF_FAILURE;
     }
 
-    struct AudioControlConfig  *compItem          = regCfgGroup[AUDIO_CTRL_CFG_GROUP]->ctrlCfgItem;
-    struct AudioMixerControl   *ctlRegCfgItem     = regCfgGroup[AUDIO_CTRL_PATAM_GROUP]->regCfgItem;
+    compItem = regCfgGroup[AUDIO_CTRL_CFG_GROUP]->ctrlCfgItem;
+    ctlRegCfgItem = regCfgGroup[AUDIO_CTRL_PATAM_GROUP]->regCfgItem;
     if (compItem == NULL || ctlRegCfgItem == NULL) {
         AUDIO_DRIVER_LOG_ERR("compItem or ctlRegCfgItem is NULL.");
         return HDF_FAILURE;
@@ -213,7 +234,7 @@ int32_t CodecSetConfigInfo(struct CodecData *codeData,  struct DaiData *daiData)
 
     for (index = 0; index < codeData->numControls; index++) {
         codeData->controls[index].iface   = compItem[index].iface;
-        codeData->controls[index].name    = g_audioControlsList[compItem[index].arrayIndex];
+        codeData->controls[index].name    = g_audioCodecControlsList[compItem[index].arrayIndex];
         codeData->controls[index].Info    = AudioInfoCtrlOps;
         codeData->controls[index].privateValue = (unsigned long)(uintptr_t)(void*)(&ctlRegCfgItem[index]);
         if (compItem[index].enable) {
@@ -234,18 +255,20 @@ int32_t CodecSetConfigInfo(struct CodecData *codeData,  struct DaiData *daiData)
 int32_t CodecSetCtlFunc(struct CodecData *codeData, const void *aiaoGetCtrl, const void *aiaoSetCtrl)
 {
     uint32_t index;
+    struct AudioRegCfgGroupNode **regCfgGroup;
+    struct AudioControlConfig *compItem;
     if (codeData == NULL || codeData->regConfig == NULL ||
         aiaoGetCtrl == NULL || aiaoSetCtrl == NULL) {
         AUDIO_DRIVER_LOG_ERR("input para is NULL.");
         return HDF_FAILURE;
     }
-    struct AudioRegCfgGroupNode **regCfgGroup = codeData->regConfig->audioRegParams;
+    regCfgGroup = codeData->regConfig->audioRegParams;
     if (regCfgGroup == NULL || regCfgGroup[AUDIO_CTRL_CFG_GROUP] == NULL) {
         AUDIO_DRIVER_LOG_ERR("regCfgGroup or regCfgGroup[AUDIO_CTRL_CFG_GROUP] is NULL.");
         return HDF_FAILURE;
     }
 
-    struct AudioControlConfig    *compItem    = regCfgGroup[AUDIO_CTRL_CFG_GROUP]->ctrlCfgItem;
+    compItem = regCfgGroup[AUDIO_CTRL_CFG_GROUP]->ctrlCfgItem;
     if (compItem == NULL) {
         AUDIO_DRIVER_LOG_ERR("compItem is NULL.");
         return HDF_FAILURE;
diff --git a/model/audio/common/src/audio_dai_base.c b/model/audio/common/src/audio_dai_base.c
index 0b9822ac..43a7a3c9 100644
--- a/model/audio/common/src/audio_dai_base.c
+++ b/model/audio/common/src/audio_dai_base.c
@@ -9,6 +9,13 @@
 #include "audio_core.h"
 #include "audio_driver_log.h"
 
+static const char *g_audioDaiControlsList[AUDIO_CTRL_LIST_MAX] = {
+    "Main Playback Volume", "Main Capture Volume",
+    "Playback Mute", "Capture Mute", "Mic Left Gain",
+    "Mic Right Gain", "External Codec Enable",
+    "Internally Codec Enable", "Render Channel Mode", "Captrue Channel Mode"
+};
+
 struct DaiData *DaiDataFromCard(const struct AudioCard *card)
 {
     if (card == NULL || card->rtd == NULL || card->rtd->cpuDai == NULL) {
@@ -102,7 +109,7 @@ int32_t DaiSetConfigInfo(struct DaiData *data)
             AUDIO_DRIVER_LOG_ERR("Array super index.");
             return HDF_FAILURE;
         }
-        data->controls[index].name     = g_audioControlsList[item[index].arrayIndex];
+        data->controls[index].name     = g_audioDaiControlsList[item[index].arrayIndex];
         data->controls[index].Info     = AudioInfoCtrlOps;
         data->controls[index].privateValue = (unsigned long)(uintptr_t)(void*)(&patRegCfgItemTmp[index]);
         data->controls[index].Get = AudioCpuDaiGetCtrlOps;
diff --git a/model/audio/common/src/audio_platform_base.c b/model/audio/common/src/audio_platform_base.c
index 4842f864..b1aad1ca 100755
--- a/model/audio/common/src/audio_platform_base.c
+++ b/model/audio/common/src/audio_platform_base.c
@@ -55,14 +55,17 @@ uint32_t AudioBytesToFrames(uint32_t frameBits, uint32_t size)
 
 int32_t AudioDataBigEndianChange(char *srcData, uint32_t audioLen, enum DataBitWidth bitWidth)
 {
+
+    uint64_t i;
+    uint16_t framesize;
+    char *changeData;
+    uint32_t *pData;
     if (srcData == NULL) {
         AUDIO_DRIVER_LOG_ERR("srcData is NULL.");
         return HDF_FAILURE;
     }
-    uint64_t i;
-    uint16_t framesize;
-    char *changeData = srcData;
-    uint32_t *pData = (uint32_t *)changeData;
+    changeData = srcData;
+    pData = (uint32_t *)changeData;
 
     switch (bitWidth) {
         case DATA_BIT_WIDTH8:
@@ -481,6 +484,10 @@ static int32_t MmapWriteData(struct PlatformData *data, char *tmpBuf)
 static int32_t AudioMmapWriteTransfer(const struct AudioCard *card)
 {
     uint32_t timeout = 0;
+    uint32_t totalSize;
+    uint32_t lastBuffSize;
+    uint32_t loopTimes;
+    char *tmpBuf;
     struct PlatformData *data = PlatformDataFromCard(card);
     if (data == NULL) {
         AUDIO_DRIVER_LOG_ERR("PlatformDataFromCard failed.");
@@ -491,12 +498,12 @@ static int32_t AudioMmapWriteTransfer(const struct AudioCard *card)
         return HDF_FAILURE;
     }
 
-    uint32_t totalSize = (uint32_t)data->mmapData.totalBufferFrames * data->renderPcmInfo.frameSize;
-    uint32_t lastBuffSize = ((totalSize % MIN_PERIOD_SIZE) == 0) ? MIN_PERIOD_SIZE : (totalSize % MIN_PERIOD_SIZE);
-    uint32_t loopTimes = (lastBuffSize == MIN_PERIOD_SIZE) ?
+    totalSize = (uint32_t)data->mmapData.totalBufferFrames * data->renderPcmInfo.frameSize;
+    lastBuffSize = ((totalSize % MIN_PERIOD_SIZE) == 0) ? MIN_PERIOD_SIZE : (totalSize % MIN_PERIOD_SIZE);
+    loopTimes = (lastBuffSize == MIN_PERIOD_SIZE) ?
         (totalSize / MIN_PERIOD_SIZE) : (totalSize / MIN_PERIOD_SIZE + 1);
     data->mmapLoopCount = 0;
-    char *tmpBuf = OsalMemCalloc(MIN_PERIOD_SIZE);
+    tmpBuf = OsalMemCalloc(MIN_PERIOD_SIZE);
     if (tmpBuf == NULL) {
         AUDIO_DRIVER_LOG_ERR("tmpBuf is null.");
         return HDF_FAILURE;
@@ -621,6 +628,9 @@ int32_t AudioMmapReadTransfer(const struct AudioCard *card, const struct AudioMm
     uint32_t offset = 0;
     enum CriBuffStatus status;
     uint32_t timeout = 0;
+    struct PlatformData *data;
+    uint32_t frameSize;
+    uint32_t totalSize;
 
     if (card == NULL || rxMmapData == NULL || rxMmapData->memoryAddress == NULL ||
         rxMmapData->totalBufferFrames <= 0) {
@@ -628,14 +638,14 @@ int32_t AudioMmapReadTransfer(const struct AudioCard *card, const struct AudioMm
         return HDF_ERR_INVALID_PARAM;
     }
 
-    struct PlatformData *data = PlatformDataFromCard(card);
+    data = PlatformDataFromCard(card);
     if (data == NULL) {
         AUDIO_DRIVER_LOG_ERR("PlatformDataFromCard failed.");
         return HDF_FAILURE;
     }
 
-    uint32_t frameSize = data->capturePcmInfo.frameSize;
-    uint32_t totalSize = (uint32_t)rxMmapData->totalBufferFrames * frameSize;
+    frameSize = data->capturePcmInfo.frameSize;
+    totalSize = (uint32_t)rxMmapData->totalBufferFrames * frameSize;
     data->captureBufInfo.pointer = 0;
     data->captureBufInfo.curTrafSize = data->captureBufInfo.trafBufSize;
     if (data->captureBufInfo.virtAddr == NULL) {
@@ -836,12 +846,13 @@ int32_t AudioRenderClose(const struct AudioCard *card)
 
 int32_t AudioCaptureOpen(const struct AudioCard *card)
 {
+    struct PlatformData *platformData;
     if (card == NULL) {
         AUDIO_DRIVER_LOG_ERR("param card is NULL.");
         return HDF_FAILURE;
     }
 
-    struct PlatformData *platformData = PlatformDataFromCard(card);
+    platformData = PlatformDataFromCard(card);
     if (platformData == NULL) {
         AUDIO_DRIVER_LOG_ERR("PlatformDataFromCard failed.");
         return HDF_FAILURE;
@@ -858,12 +869,13 @@ int32_t AudioCaptureOpen(const struct AudioCard *card)
 
 int32_t AudioCaptureClose(const struct AudioCard *card)
 {
+    struct PlatformData *platformData;
     if (card == NULL) {
         AUDIO_DRIVER_LOG_ERR("param card is NULL.");
         return HDF_FAILURE;
     }
 
-    struct PlatformData *platformData = PlatformDataFromCard(card);
+    platformData = PlatformDataFromCard(card);
     if (platformData == NULL) {
         AUDIO_DRIVER_LOG_ERR("PlatformDataFromCard failed.");
         return HDF_FAILURE;
@@ -1037,7 +1049,7 @@ int32_t AudioHwParams(const struct AudioCard *card, const struct AudioPcmHwParam
 {
     const int chnlCntMin = 1;
     const int chnlCntMax = 2;
-
+    struct PlatformData *platformData;
     if (card == NULL || param == NULL || param->cardServiceName == NULL) {
         AUDIO_DRIVER_LOG_ERR("input param is NULL.");
         return HDF_FAILURE;
@@ -1048,7 +1060,7 @@ int32_t AudioHwParams(const struct AudioCard *card, const struct AudioPcmHwParam
         return HDF_FAILURE;
     }
 
-    struct PlatformData *platformData = PlatformDataFromCard(card);
+    platformData = PlatformDataFromCard(card);
     if (platformData == NULL) {
         AUDIO_DRIVER_LOG_ERR("platformData is null.");
         return HDF_FAILURE;
@@ -1087,12 +1099,13 @@ int32_t AudioHwParams(const struct AudioCard *card, const struct AudioPcmHwParam
 int32_t AudioRenderPrepare(const struct AudioCard *card)
 {
     int ret;
+    struct PlatformData *platformData;
     if (card == NULL) {
         AUDIO_DRIVER_LOG_ERR("param card is NULL.");
         return HDF_FAILURE;
     }
 
-    struct PlatformData *platformData = PlatformDataFromCard(card);
+    platformData = PlatformDataFromCard(card);
     if (platformData == NULL) {
         AUDIO_DRIVER_LOG_ERR("PlatformDataFromCard failed.");
         return HDF_FAILURE;
@@ -1120,12 +1133,13 @@ int32_t AudioRenderPrepare(const struct AudioCard *card)
 int32_t AudioCapturePrepare(const struct AudioCard *card)
 {
     int ret;
+    struct PlatformData *platformData;
     if (card == NULL) {
         AUDIO_DRIVER_LOG_ERR("param card is NULL.");
         return HDF_FAILURE;
     }
 
-    struct PlatformData *platformData = PlatformDataFromCard(card);
+    platformData = PlatformDataFromCard(card);
     if (platformData == NULL) {
         AUDIO_DRIVER_LOG_ERR("PlatformDataFromCard failed.");
         return HDF_FAILURE;
@@ -1154,12 +1168,13 @@ int32_t AudioCapturePrepare(const struct AudioCard *card)
 int32_t AudioPcmPointer(const struct AudioCard *card, uint32_t *pointer, enum AudioStreamType streamType)
 {
     int ret;
+    struct PlatformData *data;
     if (card == NULL || pointer == NULL) {
         AUDIO_DRIVER_LOG_ERR("param card is NULL.");
         return HDF_FAILURE;
     }
 
-    struct PlatformData *data = PlatformDataFromCard(card);
+    data = PlatformDataFromCard(card);
     if (data == NULL) {
         AUDIO_DRIVER_LOG_ERR("PlatformDataFromCard failed.");
         return HDF_FAILURE;
diff --git a/model/audio/core/include/audio_parse.h b/model/audio/core/include/audio_parse.h
index e66b3b7e..3558cb12 100755
--- a/model/audio/core/include/audio_parse.h
+++ b/model/audio/core/include/audio_parse.h
@@ -23,21 +23,6 @@ extern "C" {
 #define AUDIO_SAPM_COMP_NAME_LIST_MAX 9
 #define AUDIO_SAPM_CFG_NAME_LIST_MAX 4
 
-static const char *g_audioControlsList[AUDIO_CTRL_LIST_MAX] = {
-    "Main Playback Volume", "Main Capture Volume",
-    "Playback Mute", "Capture Mute", "Mic Left Gain",
-    "Mic Right Gain", "External Codec Enable",
-    "Internally Codec Enable", "Render Channel Mode", "Captrue Channel Mode"
-};
-
-static char *g_audioSapmCompNameList[AUDIO_SAPM_COMP_NAME_LIST_MAX] = {
-    "ADCL", "ADCR", "DACL", "DACR", "LPGA", "RPGA", "SPKL", "SPKR", "MIC"
-};
-
-static char *g_audioSapmCfgNameList[AUDIO_SAPM_CFG_NAME_LIST_MAX] = {
-    "LPGA MIC Switch", "RPGA MIC Switch", "Dacl enable", "Dacr enable"
-};
-
 enum AudioRegOpsType {
     AUDIO_RSET_GROUP = 0,
     AUDIO_INIT_GROUP,
diff --git a/model/audio/core/src/audio_host.c b/model/audio/core/src/audio_host.c
index 7e426e97..d35ccb11 100755
--- a/model/audio/core/src/audio_host.c
+++ b/model/audio/core/src/audio_host.c
@@ -48,14 +48,14 @@ struct AudioCard *GetCardInstance(const char *serviceName)
 
 static int32_t AudioCodecDevInit(struct AudioCard *audioCard)
 {
+    struct AudioRuntimeDeivces *rtd = NULL;
+    struct CodecDevice *codec = NULL;
+    ADM_LOG_DEBUG("entry.");
+
     if (audioCard == NULL) {
         ADM_LOG_ERR("audioCard is NULL.");
         return HDF_ERR_IO;
     }
-
-    ADM_LOG_DEBUG("entry.");
-    struct AudioRuntimeDeivces *rtd = NULL;
-    struct CodecDevice *codec = NULL;
     rtd = audioCard->rtd;
     if (rtd == NULL) {
         ADM_LOG_ERR("rtd is NULL.");
@@ -77,14 +77,16 @@ static int32_t AudioCodecDevInit(struct AudioCard *audioCard)
 
 static int32_t AudioAccessoryDevInit(struct AudioCard *audioCard)
 {
+    struct AudioRuntimeDeivces *rtd = NULL;
+    struct AccessoryDevice *accessory = NULL;
+    ADM_LOG_DEBUG("entry.");
+
     if (audioCard == NULL) {
         ADM_LOG_ERR("audioCard is NULL.");
         return HDF_ERR_IO;
     }
 
-    ADM_LOG_DEBUG("entry.");
-    struct AudioRuntimeDeivces *rtd = NULL;
-    struct AccessoryDevice *accessory = NULL;
+
     rtd = audioCard->rtd;
     if (rtd == NULL) {
         ADM_LOG_ERR("rtd is NULL.");
diff --git a/model/audio/core/src/audio_parse.c b/model/audio/core/src/audio_parse.c
index 24514070..a6988dcc 100755
--- a/model/audio/core/src/audio_parse.c
+++ b/model/audio/core/src/audio_parse.c
@@ -67,6 +67,15 @@ int32_t AudioFillConfigData(const struct HdfDeviceObject *device, struct AudioCo
 {
     const struct DeviceResourceNode *node = NULL;
     struct DeviceResourceIface *drsOps = NULL;
+    int32_t serviceRet;
+    int32_t codecRet;
+    int32_t platformRet;
+    int32_t cpuRet;
+    int32_t codeDaiRet;
+    int32_t dspRet;
+    int32_t dspDaiRet;
+    int32_t accessoryRet;
+    int32_t accessoryDaiRet;
     ADM_LOG_DEBUG("Entry.");
 
     if (device == NULL || configData == NULL) {
@@ -85,15 +94,15 @@ int32_t AudioFillConfigData(const struct HdfDeviceObject *device, struct AudioCo
         return HDF_FAILURE;
     }
 
-    int32_t serviceRet = drsOps->GetString(node, "serviceName", &(configData->cardServiceName), 0);
-    int32_t codecRet = drsOps->GetString(node, "codecName", &(configData->codecName), 0);
-    int32_t platformRet = drsOps->GetString(node, "platformName", &(configData->platformName), 0);
-    int32_t cpuRet = drsOps->GetString(node, "cpuDaiName", &(configData->cpuDaiName), 0);
-    int32_t codeDaiRet = drsOps->GetString(node, "codecDaiName", &(configData->codecDaiName), 0);
-    int32_t dspRet = drsOps->GetString(node, "dspName", &(configData->dspName), 0);
-    int32_t dspDaiRet = drsOps->GetString(node, "dspDaiName", &(configData->dspDaiName), 0);
-    int32_t accessoryRet = drsOps->GetString(node, "accessoryName", &(configData->accessoryName), 0);
-    int32_t accessoryDaiRet = drsOps->GetString(node, "accessoryDaiName", &(configData->accessoryDaiName), 0);
+    serviceRet = drsOps->GetString(node, "serviceName", &(configData->cardServiceName), 0);
+    codecRet = drsOps->GetString(node, "codecName", &(configData->codecName), 0);
+    platformRet = drsOps->GetString(node, "platformName", &(configData->platformName), 0);
+    cpuRet = drsOps->GetString(node, "cpuDaiName", &(configData->cpuDaiName), 0);
+    codeDaiRet = drsOps->GetString(node, "codecDaiName", &(configData->codecDaiName), 0);
+    dspRet = drsOps->GetString(node, "dspName", &(configData->dspName), 0);
+    dspDaiRet = drsOps->GetString(node, "dspDaiName", &(configData->dspDaiName), 0);
+    accessoryRet = drsOps->GetString(node, "accessoryName", &(configData->accessoryName), 0);
+    accessoryDaiRet = drsOps->GetString(node, "accessoryDaiName", &(configData->accessoryDaiName), 0);
     if (serviceRet || codecRet || platformRet || cpuRet || codeDaiRet ||
         dspRet || dspDaiRet || accessoryRet || accessoryDaiRet) {
         ADM_LOG_ERR("Read audioDeviceName fail: serviceRet=%d, codecRet=%d, platformRet=%d, cpuRet=%d, codeDaiRet=%d,"
@@ -133,19 +142,21 @@ static uint32_t* GetRegArray(const struct DeviceResourceIface *parser, const str
     struct AudioRegCfgGroupNode* group, uint32_t indexMax)
 {
     int32_t ret;
-
+    int32_t index;
+    int32_t num;
+    uint32_t *buf;
     if (group == NULL || parser == NULL || regNode == NULL || indexMax == 0) {
         ADM_LOG_ERR("Input para check error");
         return NULL;
     }
 
-    int32_t index = group->groupIndex;
+    index = group->groupIndex;
     if (index >= AUDIO_GROUP_MAX) {
         ADM_LOG_ERR("Input indexMax=%d error", index);
         return NULL;
     }
 
-    int32_t num = parser->GetElemNum(regNode, g_audioRegGroupName[index]);
+    num = parser->GetElemNum(regNode, g_audioRegGroupName[index]);
     if (num <= 0 || num > AUDIO_CONFIG_MAX_ITEM) {
         ADM_LOG_ERR("parser %s element num failed", g_audioRegGroupName[index]);
         return NULL;
@@ -153,7 +164,7 @@ static uint32_t* GetRegArray(const struct DeviceResourceIface *parser, const str
 
     group->itemNum =  num / indexMax;
 
-    uint32_t *buf = (uint32_t *)OsalMemCalloc(sizeof(uint32_t) * num);
+    buf = (uint32_t *)OsalMemCalloc(sizeof(uint32_t) * num);
     if (buf == NULL) {
         ADM_LOG_ERR("malloc reg array buf failed!");
         return NULL;
@@ -173,13 +184,13 @@ static int32_t ParseAudioRegItem(const struct DeviceResourceIface *parser, const
 {
     int32_t step;
     int32_t index;
-
+    int32_t *buf;
     if (group == NULL || parser == NULL || regNode == NULL) {
         ADM_LOG_ERR("Input para check error");
         return HDF_FAILURE;
     }
 
-    int32_t *buf = GetRegArray(parser, regNode, group, AUDIO_REG_CFG_INDEX_MAX);
+    buf = GetRegArray(parser, regNode, group, AUDIO_REG_CFG_INDEX_MAX);
     if (buf == NULL) {
         ADM_LOG_ERR("malloc reg array buf failed!");
         return HDF_FAILURE;
@@ -216,13 +227,13 @@ static int32_t ParseAudioSapmItem(const struct DeviceResourceIface *parser, cons
 {
     int32_t step;
     int32_t index;
-
+    uint32_t *buf;
     if (group == NULL || parser == NULL || regNode == NULL) {
         ADM_LOG_ERR("Input para check error");
         return HDF_FAILURE;
     }
 
-    uint32_t *buf = GetRegArray(parser, regNode, group, AUDIO_SAPM_COMP_INDEX_MAX);
+    buf = GetRegArray(parser, regNode, group, AUDIO_SAPM_COMP_INDEX_MAX);
     if (buf == NULL) {
         ADM_LOG_ERR("malloc reg array buf failed!");
         return HDF_FAILURE;
@@ -258,13 +269,13 @@ static int32_t ParseAudioCtrlItem(const struct DeviceResourceIface *parser, cons
 {
     int32_t step;
     int32_t index;
-
+    uint32_t *buf;
     if (parser == NULL || regNode == NULL || group == NULL) {
         ADM_LOG_ERR("Input para check error");
         return HDF_FAILURE;
     }
 
-    uint32_t *buf = GetRegArray(parser, regNode, group, AUDIO_CTRL_CFG_INDEX_MAX);
+    buf = GetRegArray(parser, regNode, group, AUDIO_CTRL_CFG_INDEX_MAX);
     if (buf == NULL) {
         ADM_LOG_ERR("malloc reg array buf failed!");
         return HDF_FAILURE;
@@ -294,13 +305,14 @@ static int32_t ParseAudioAddrItem(const struct DeviceResourceIface *parser, cons
 {
     int32_t step;
     int32_t index;
+    uint32_t *buf;
 
     if (parser == NULL || regNode == NULL || group == NULL) {
         ADM_LOG_ERR("Input para check error.");
         return HDF_FAILURE;
     }
 
-    uint32_t *buf = GetRegArray(parser, regNode, group, AUDIO_ADDR_CFG_INDEX_MAX);
+    buf = GetRegArray(parser, regNode, group, AUDIO_ADDR_CFG_INDEX_MAX);
     if (buf == NULL) {
         ADM_LOG_ERR("malloc reg array buf failed!");
         return HDF_FAILURE;
diff --git a/model/audio/dispatch/src/audio_stream_dispatch.c b/model/audio/dispatch/src/audio_stream_dispatch.c
index 18b38a98..e6519404 100755
--- a/model/audio/dispatch/src/audio_stream_dispatch.c
+++ b/model/audio/dispatch/src/audio_stream_dispatch.c
@@ -21,18 +21,20 @@ static inline struct StreamHost *StreamHostFromDevice(const struct HdfDeviceObje
 
 static int32_t HwCpuDaiDispatch(const struct AudioCard *audioCard, const struct AudioPcmHwParams *params)
 {
+    struct AudioRuntimeDeivces *rtd;
+    struct DaiDevice *cpuDai;
     if ((audioCard == NULL) || (params == NULL)) {
         ADM_LOG_ERR("CpuDai input param is NULL.");
         return HDF_FAILURE;
     }
 
-    struct AudioRuntimeDeivces *rtd = audioCard->rtd;
+    rtd = audioCard->rtd;
     if (rtd == NULL) {
         ADM_LOG_ERR("CpuDai audioCard rtd is NULL.");
         return HDF_FAILURE;
     }
 
-    struct DaiDevice *cpuDai = rtd->cpuDai;
+    cpuDai = rtd->cpuDai;
     if (cpuDai == NULL || cpuDai->devData == NULL || cpuDai->devData->ops == NULL) {
         ADM_LOG_ERR("cpuDai param is NULL.");
         return HDF_FAILURE;
@@ -54,17 +56,19 @@ static int32_t HwCpuDaiDispatch(const struct AudioCard *audioCard, const struct
 
 static int32_t HwCodecDaiDispatch(const struct AudioCard *audioCard, const struct AudioPcmHwParams *params)
 {
+    struct AudioRuntimeDeivces *rtd;
+    struct DaiDevice *codecDai;
     if ((audioCard == NULL) || (params == NULL)) {
         ADM_LOG_ERR("CodecDai input param is NULL.");
         return HDF_FAILURE;
     }
 
-    struct AudioRuntimeDeivces *rtd = audioCard->rtd;
+    rtd = audioCard->rtd;
     if (rtd == NULL) {
         ADM_LOG_ERR("CodecDai audioCard rtd is NULL.");
         return HDF_FAILURE;
     }
-    struct DaiDevice *codecDai = rtd->codecDai;
+    codecDai = rtd->codecDai;
     if (codecDai == NULL) {
         codecDai = rtd->accessoryDai;
     }
@@ -89,16 +93,18 @@ static int32_t HwCodecDaiDispatch(const struct AudioCard *audioCard, const struc
 
 static int32_t HwDspDaiDispatch(const struct AudioCard *audioCard, const struct AudioPcmHwParams *params)
 {
+    struct AudioRuntimeDeivces *rtd;
+    struct DaiDevice *dspDai;
     if ((audioCard == NULL) || (params == NULL)) {
         ADM_LOG_ERR("DspDai input param is NULL.");
         return HDF_FAILURE;
     }
-    struct AudioRuntimeDeivces *rtd = audioCard->rtd;
+    rtd = audioCard->rtd;
     if (rtd == NULL) {
         ADM_LOG_ERR("DspDai audioCard rtd is NULL.");
         return HDF_FAILURE;
     }
-    struct DaiDevice *dspDai = rtd->dspDai;
+    dspDai = rtd->dspDai;
 
     if (dspDai != NULL && dspDai->devData != NULL && dspDai->devData->ops != NULL &&
         dspDai->devData->ops->HwParams != NULL) {
@@ -113,12 +119,14 @@ static int32_t HwDspDaiDispatch(const struct AudioCard *audioCard, const struct
 
 static int32_t HwPlatfromDispatch(const struct AudioCard *audioCard, const struct AudioPcmHwParams *params)
 {
+    int ret = 0;
+    struct AudioRuntimeDeivces *rtd;
     if ((audioCard == NULL) || (params == NULL)) {
         ADM_LOG_ERR("Platfrom input param is NULL.");
         return HDF_FAILURE;
     }
 
-    struct AudioRuntimeDeivces *rtd = audioCard->rtd;
+    rtd = audioCard->rtd;
     if (rtd == NULL) {
         ADM_LOG_ERR("audioCard rtd is NULL.");
         return HDF_FAILURE;
@@ -127,7 +135,7 @@ static int32_t HwPlatfromDispatch(const struct AudioCard *audioCard, const struc
     /* If there are HwParams function, it will be executed directly.
      * If not, skip the if statement and execute in sequence.
      */
-    int ret = AudioHwParams(audioCard, params);
+    ret = AudioHwParams(audioCard, params);
     if (ret < 0) {
         ADM_LOG_ERR("platform hardware params failed ret=%d", ret);
         return HDF_ERR_IO;
@@ -819,6 +827,7 @@ static int32_t StreamHostMmapPositionWrite(const struct HdfDeviceIoClient *clien
     struct HdfSBuf *data, struct HdfSBuf *reply)
 {
     struct AudioCard *audioCard = NULL;
+    struct PlatformData *platformData;
     ADM_LOG_DEBUG("entry.");
     if (client == NULL || reply == NULL) {
         ADM_LOG_ERR("input param is NULL.");
@@ -829,7 +838,7 @@ static int32_t StreamHostMmapPositionWrite(const struct HdfDeviceIoClient *clien
         ADM_LOG_ERR("audioCard instance is NULL.");
         return HDF_FAILURE;
     }
-    struct PlatformData *platformData = PlatformDataFromCard(audioCard);
+    platformData = PlatformDataFromCard(audioCard);
     if (platformData == NULL) {
         ADM_LOG_ERR("platformHost instance is NULL.");
         return HDF_FAILURE;
@@ -897,6 +906,7 @@ static int32_t StreamHostMmapPositionRead(const struct HdfDeviceIoClient *client
     struct HdfSBuf *data, struct HdfSBuf *reply)
 {
     struct AudioCard *audioCard = NULL;
+    struct PlatformData *platformData;
     ADM_LOG_DEBUG("entry.");
     if (client == NULL || reply == NULL) {
         ADM_LOG_ERR("input param is NULL.");
@@ -907,7 +917,7 @@ static int32_t StreamHostMmapPositionRead(const struct HdfDeviceIoClient *client
         ADM_LOG_ERR("audioCard is NULL.");
         return HDF_FAILURE;
     }
-    struct PlatformData *platformData = PlatformDataFromCard(audioCard);
+    platformData = PlatformDataFromCard(audioCard);
     if (platformData == NULL) {
         ADM_LOG_ERR("platformHost is NULL.");
         return HDF_FAILURE;
@@ -1478,7 +1488,8 @@ static int32_t StreamDispatch(struct HdfDeviceIoClient *client, int cmdId,
     struct HdfSBuf *data, struct HdfSBuf *reply)
 {
     unsigned int count = sizeof(g_streamDispCmdHandle) / sizeof(g_streamDispCmdHandle[0]);
-    for (unsigned int i = 0; i < count; ++i) {
+    unsigned int i = 0;
+    for (i = 0; i < count; ++i) {
         if ((cmdId == (int)(g_streamDispCmdHandle[i].cmd)) && (g_streamDispCmdHandle[i].func != NULL)) {
             return g_streamDispCmdHandle[i].func(client, data, reply);
         }
@@ -1489,11 +1500,12 @@ static int32_t StreamDispatch(struct HdfDeviceIoClient *client, int cmdId,
 
 static struct StreamHost *StreamHostCreateAndBind(struct HdfDeviceObject *device)
 {
+    struct StreamHost *streamHost;
     if (device == NULL) {
         return NULL;
     }
 
-    struct StreamHost *streamHost = (struct StreamHost *)OsalMemCalloc(sizeof(*streamHost));
+    streamHost = (struct StreamHost *)OsalMemCalloc(sizeof(*streamHost));
     if (streamHost == NULL) {
         ADM_LOG_ERR("malloc host failed!");
         return NULL;
@@ -1505,12 +1517,13 @@ static struct StreamHost *StreamHostCreateAndBind(struct HdfDeviceObject *device
 
 static int32_t AudioStreamBind(struct HdfDeviceObject *device)
 {
+    struct StreamHost *streamHost;
     ADM_LOG_DEBUG("entry!");
     if (device == NULL) {
         return HDF_ERR_INVALID_PARAM;
     }
 
-    struct StreamHost *streamHost = StreamHostCreateAndBind(device);
+    streamHost = StreamHostCreateAndBind(device);
     if (streamHost == NULL || streamHost->device == NULL) {
         ADM_LOG_ERR("StreamHostCreateAndBind failed");
         return HDF_FAILURE;
@@ -1544,12 +1557,13 @@ static int32_t AudioStreamInit(struct HdfDeviceObject *device)
 
 static void AudioStreamRelease(struct HdfDeviceObject *device)
 {
+    struct StreamHost *streamHost;
     if (device == NULL) {
         ADM_LOG_ERR("device is NULL");
         return;
     }
 
-    struct StreamHost *streamHost = StreamHostFromDevice(device);
+    streamHost = StreamHostFromDevice(device);
     if (streamHost == NULL) {
         ADM_LOG_ERR("renderHost is NULL");
         return;