diff --git a/sample/platform/uart/include/uart_dev_sample.h b/sample/platform/uart/include/uart_dev_sample.h
index f4b218c799f8f99ab7b5340b11ff5c1aedafc170..bc267e18bf4756bca0bb6039d48c23f8fc8e6d52 100755
--- a/sample/platform/uart/include/uart_dev_sample.h
+++ b/sample/platform/uart/include/uart_dev_sample.h
@@ -30,8 +30,8 @@ extern "C" {
 /* baudrate config */
 #define UART_CFG_BAUDRATE _IO(UART_IOC_MAGIC, 1)
 
-void UartSampleAddDev(struct UartHost *host);
-void UartSampleRemoveDev(struct UartHost *host);
+void AddUartDevice(struct UartHost *host);
+void RemoveUartDevice(struct UartHost *host);
 
 #ifdef __cplusplus
 #if __cplusplus
diff --git a/sample/platform/uart/include/uart_dispatch_sample.h b/sample/platform/uart/include/uart_dispatch_sample.h
index 21d4dd1ca0e66ff812e2be6b2a242c669187e530..9ecc0f898f813e8fc0e42bca30004e93aa17361b 100755
--- a/sample/platform/uart/include/uart_dispatch_sample.h
+++ b/sample/platform/uart/include/uart_dispatch_sample.h
@@ -22,6 +22,6 @@ enum {
     UART_WRITE = 1
 };
 
-void SampleDispatchConstruct(struct UartDevice *device);
+int32_t SampleDispatch(struct HdfDeviceIoClient *client, int cmdId, struct HdfSBuf *data, struct HdfSBuf *reply);
 
 #endif // UART_DISPATCH_SAMPLE_H
diff --git a/sample/platform/uart/src/uart_dev_sample.c b/sample/platform/uart/src/uart_dev_sample.c
index c9ab844b394871be4bff23263e5e4a3061bbdf3d..d301971814eaa1e3476d0e86c52feea6ca542f06 100755
--- a/sample/platform/uart/src/uart_dev_sample.c
+++ b/sample/platform/uart/src/uart_dev_sample.c
@@ -157,7 +157,7 @@ const struct file_operations_vfs g_uartSampleDevFops = {
 };
 
 #define MAX_DEV_NAME_SIZE 32
-static void UartSampleAddRemoveDev(struct UartHost *host, bool add)
+static void AddRemoveUartDev(struct UartHost *host, bool add)
 {
     int32_t ret;
     char *devName = NULL;
@@ -193,12 +193,12 @@ static void UartSampleAddRemoveDev(struct UartHost *host, bool add)
     OsalMemFree(devName);
 }
 
-void UartSampleAddDev(struct UartHost *host)
+void AddUartDevice(struct UartHost *host)
 {
-    UartSampleAddRemoveDev(host, true);
+    AddRemoveUartDev(host, true);
 }
 
-void UartSampleRemoveDev(struct UartHost *host)
+void RemoveUartDevice(struct UartHost *host)
 {
-    UartSampleAddRemoveDev(host, false);
+    AddRemoveUartDev(host, false);
 }
diff --git a/sample/platform/uart/src/uart_dispatch_sample.c b/sample/platform/uart/src/uart_dispatch_sample.c
index e70a169a0933f4c89f40a77b74a73729e13cf7ec..82f34678b8afbec3b86551276e675a22f273cab9 100755
--- a/sample/platform/uart/src/uart_dispatch_sample.c
+++ b/sample/platform/uart/src/uart_dispatch_sample.c
@@ -45,14 +45,19 @@ static int32_t SampleDispatchWrite(struct UartDevice *device, struct HdfSBuf *tx
     return HDF_SUCCESS;
 }
 
-static int32_t SampleDispatch(struct HdfDeviceIoClient *client, int cmdId, struct HdfSBuf *data, struct HdfSBuf *reply)
+int32_t SampleDispatch(struct HdfDeviceIoClient *client, int cmdId, struct HdfSBuf *data, struct HdfSBuf *reply)
 {
     int32_t result = HDF_FAILURE;
     if (client == NULL || client->device == NULL) {
         HDF_LOGE("%s: client or client->device is NULL", __func__);
         return result;
     }
-    struct UartDevice *uartDevice = (struct UartDevice *)client->device->service;
+    struct UartHost *uartHost = (struct UartHost *)client->device->service;
+    if (uartHost == NULL) {
+        HDF_LOGE("%s: uartHost is NULL", __func__);
+        return result;
+    }
+    struct UartDevice *uartDevice = (struct UartDevice *)uartHost->priv;
     if (uartDevice == NULL) {
         HDF_LOGE("%s: uartDevice is NULL", __func__);
         return result;
@@ -67,11 +72,3 @@ static int32_t SampleDispatch(struct HdfDeviceIoClient *client, int cmdId, struc
     }
     return result;
 }
-
-void SampleDispatchConstruct(struct UartDevice *device)
-{
-    struct IDeviceIoService *ioService = &device->ioService;
-    if (ioService != NULL) {
-        ioService->Dispatch = &SampleDispatch;
-    }
-}
diff --git a/sample/platform/uart/src/uart_sample.c b/sample/platform/uart/src/uart_sample.c
index d329600dd8b6c1f2fef5e18fbe22dc52ddb4f8da..bd48b2829359a2cf0b17536734409645f49a3f83 100755
--- a/sample/platform/uart/src/uart_sample.c
+++ b/sample/platform/uart/src/uart_sample.c
@@ -31,44 +31,44 @@
 static uint8_t g_fifoBuffer[UART_RX_FIFO_SIZE] = {0};
 
 /* HdfDriverEntry method definitions */
-static int32_t HdfUartSampleBind(struct HdfDeviceObject *device);
-static int32_t HdfUartSampleInit(struct HdfDeviceObject *device);
-static void HdfUartSampleRelease(struct HdfDeviceObject *device);
+static int32_t SampleUartDriverBind(struct HdfDeviceObject *device);
+static int32_t SampleUartDriverInit(struct HdfDeviceObject *device);
+static void SampleUartDriverRelease(struct HdfDeviceObject *device);
 
 /* HdfDriverEntry definitions */
-struct HdfDriverEntry g_hdfUartSample = {
+struct HdfDriverEntry g_sampleUartDriverEntry = {
     .moduleVersion = 1,
     .moduleName = "UART_SAMPLE",
-    .Bind = HdfUartSampleBind,
-    .Init = HdfUartSampleInit,
-    .Release = HdfUartSampleRelease,
+    .Bind = SampleUartDriverBind,
+    .Init = SampleUartDriverInit,
+    .Release = SampleUartDriverRelease,
 };
 
 // Initialize HdfDriverEntry
-HDF_INIT(g_hdfUartSample);
+HDF_INIT(g_sampleUartDriverEntry);
 
 /* UartHostMethod method definitions */
-static int32_t SampleInit(struct UartHost *host);
-static int32_t SampleDeinit(struct UartHost *host);
-static int32_t SampleWrite(struct UartHost *host, uint8_t *data, uint32_t size);
-static int32_t SampleSetBaud(struct UartHost *host, uint32_t baudRate);
-static int32_t SampleGetBaud(struct UartHost *host, uint32_t *baudRate);
+static int32_t SampleUartHostInit(struct UartHost *host);
+static int32_t SampleUartHostDeinit(struct UartHost *host);
+static int32_t SampleUartHostWrite(struct UartHost *host, uint8_t *data, uint32_t size);
+static int32_t SampleUartHostSetBaud(struct UartHost *host, uint32_t baudRate);
+static int32_t SampleUartHostGetBaud(struct UartHost *host, uint32_t *baudRate);
 
 /* UartHostMethod definitions */
-struct UartHostMethod g_uartSampleHostMethod = {
-    .Init = SampleInit,
-    .Deinit = SampleDeinit,
+struct UartHostMethod g_sampleUartHostMethod = {
+    .Init = SampleUartHostInit,
+    .Deinit = SampleUartHostDeinit,
     .Read = NULL,
-    .Write = SampleWrite,
-    .SetBaud = SampleSetBaud,
-    .GetBaud = SampleGetBaud,
+    .Write = SampleUartHostWrite,
+    .SetBaud = SampleUartHostSetBaud,
+    .GetBaud = SampleUartHostGetBaud,
     .SetAttribute = NULL,
     .GetAttribute = NULL,
     .SetTransMode = NULL,
 };
 
 /* UartHostMethod implementations */
-static int32_t SampleInit(struct UartHost *host)
+static int32_t SampleUartHostInit(struct UartHost *host)
 {
     HDF_LOGI("%s: Enter", __func__);
     if (host == NULL) {
@@ -78,7 +78,7 @@ static int32_t SampleInit(struct UartHost *host)
     return HDF_SUCCESS;
 }
 
-static int32_t SampleDeinit(struct UartHost *host)
+static int32_t SampleUartHostDeinit(struct UartHost *host)
 {
     HDF_LOGI("%s: Enter", __func__);
     if (host == NULL) {
@@ -88,7 +88,7 @@ static int32_t SampleDeinit(struct UartHost *host)
     return HDF_SUCCESS;
 }
 
-static int32_t SampleWrite(struct UartHost *host, uint8_t *data, uint32_t size)
+static int32_t SampleUartHostWrite(struct UartHost *host, uint8_t *data, uint32_t size)
 {
     HDF_LOGI("%s: Enter", __func__);
     uint32_t idx;
@@ -111,7 +111,7 @@ static int32_t SampleWrite(struct UartHost *host, uint8_t *data, uint32_t size)
     return HDF_SUCCESS;
 }
 
-static int32_t SampleSetBaud(struct UartHost *host, uint32_t baudRate)
+static int32_t SampleUartHostSetBaud(struct UartHost *host, uint32_t baudRate)
 {
     HDF_LOGI("%s: Enter", __func__);
     struct UartDevice *device = NULL;
@@ -141,7 +141,7 @@ static int32_t SampleSetBaud(struct UartHost *host, uint32_t baudRate)
     return err;
 }
 
-static int32_t SampleGetBaud(struct UartHost *host, uint32_t *baudRate)
+static int32_t SampleUartHostGetBaud(struct UartHost *host, uint32_t *baudRate)
 {
     HDF_LOGI("%s: Enter", __func__);
     struct UartDevice *device = NULL;
@@ -159,7 +159,7 @@ static int32_t SampleGetBaud(struct UartHost *host, uint32_t *baudRate)
     return HDF_SUCCESS;
 }
 
-static int UartDeviceInit(struct UartDevice *device)
+static int InitUartDevice(struct UartDevice *device)
 {
     UartPl011Error err;
     struct UartResource *resource = &device->resource;
@@ -187,7 +187,7 @@ static int UartDeviceInit(struct UartDevice *device)
     return HDF_SUCCESS;
 }
 
-static uint32_t UartDeviceGetResource(
+static uint32_t GetUartDeviceResource(
     struct UartDevice *device, const struct DeviceResourceNode *resourceNode)
 {
     struct UartResource *resource = &device->resource;
@@ -199,11 +199,11 @@ static uint32_t UartDeviceGetResource(
     }
 
     if (dri->GetUint32(resourceNode, "num", &resource->num, 0) != HDF_SUCCESS) {
-        HDF_LOGE("uart config  read num fail");
+        HDF_LOGE("uart config read num fail");
         return HDF_FAILURE;
     }
     if (dri->GetUint32(resourceNode, "base", &resource->base, 0) != HDF_SUCCESS) {
-        HDF_LOGE("uart config  read base fail");
+        HDF_LOGE("uart config read base fail");
         return HDF_FAILURE;
     }
     resource->physBase = (unsigned long)OsalIoRemap(resource->base, 0x48);
@@ -216,29 +216,29 @@ static uint32_t UartDeviceGetResource(
         return HDF_FAILURE;
     }
     if (dri->GetUint32(resourceNode, "baudrate", &resource->baudrate, 0) != HDF_SUCCESS) {
-        HDF_LOGE("uart config  read baudrate fail");
+        HDF_LOGE("uart config read baudrate fail");
         return HDF_FAILURE;
     }
     if (dri->GetUint32(resourceNode, "wlen", &resource->wlen, 0) != HDF_SUCCESS) {
-        HDF_LOGE("uart config  read wlen fail");
+        HDF_LOGE("uart config read wlen fail");
         return HDF_FAILURE;
     }
     if (dri->GetUint32(resourceNode, "parity", &resource->parity, 0) != HDF_SUCCESS) {
-        HDF_LOGE("uart config  read parity fail");
+        HDF_LOGE("uart config read parity fail");
         return HDF_FAILURE;
     }
     if (dri->GetUint32(resourceNode, "stopBit", &resource->stopBit, 0) != HDF_SUCCESS) {
-        HDF_LOGE("uart config  read stopBit fail");
+        HDF_LOGE("uart config read stopBit fail");
         return HDF_FAILURE;
     }
     if (dri->GetUint32(resourceNode, "uartClk", &resource->uartClk, 0) != HDF_SUCCESS) {
-        HDF_LOGE("uart config  read uartClk fail");
+        HDF_LOGE("uart config read uartClk fail");
         return HDF_FAILURE;
     }
     return HDF_SUCCESS;
 }
 
-static int32_t SampleAttach(struct UartHost *host, struct HdfDeviceObject *device)
+static int32_t AttachUartDevice(struct UartHost *host, struct HdfDeviceObject *device)
 {
     int32_t ret;
     struct UartDevice *uartDevice = NULL;
@@ -251,20 +251,18 @@ static int32_t SampleAttach(struct UartHost *host, struct HdfDeviceObject *devic
         HDF_LOGE("%s: OsalMemCalloc uartDevice error", __func__);
         return HDF_ERR_MALLOC_FAIL;
     }
-    SampleDispatchConstruct(uartDevice);
-    device->service = &uartDevice->ioService;
-    ret = UartDeviceGetResource(uartDevice, device->property);
+    ret = GetUartDeviceResource(uartDevice, device->property);
     if (ret != HDF_SUCCESS) {
         (void)OsalMemFree(uartDevice);
         return HDF_FAILURE;
     }
     host->num = uartDevice->resource.num;
     host->priv = uartDevice;
-    UartSampleAddDev(host);
-    return UartDeviceInit(uartDevice);
+    AddUartDevice(host);
+    return InitUartDevice(uartDevice);
 }
 
-static void UartDeviceDeinit(struct UartDevice *device)
+static void DeinitUartDevice(struct UartDevice *device)
 {
     struct UartRegisterMap *regMap = (struct UartRegisterMap *)device->resource.physBase;
     /* wait for uart enter idle. */
@@ -275,7 +273,7 @@ static void UartDeviceDeinit(struct UartDevice *device)
     device->state = UART_DEVICE_UNINITIALIZED;
 }
 
-static void SampleDetach(struct UartHost *host)
+static void DetachUartDevice(struct UartHost *host)
 {
     struct UartDevice *uartDevice = NULL;
 
@@ -284,22 +282,31 @@ static void SampleDetach(struct UartHost *host)
         return;
     }
     uartDevice = host->priv;
-    UartDeviceDeinit(uartDevice);
+    DeinitUartDevice(uartDevice);
     (void)OsalMemFree(uartDevice);
     host->priv = NULL;
 }
 
 /* HdfDriverEntry implementations */
-static int32_t HdfUartSampleBind(struct HdfDeviceObject *device)
+static int32_t SampleUartDriverBind(struct HdfDeviceObject *device)
 {
+    struct UartHost *uartHost = NULL;
+
     if (device == NULL) {
         return HDF_ERR_INVALID_OBJECT;
     }
     HDF_LOGI("Enter %s:", __func__);
-    return (UartHostCreate(device) == NULL) ? HDF_FAILURE : HDF_SUCCESS;
+
+    uartHost = UartHostCreate(device);
+    if (uartHost == NULL) {
+        HDF_LOGE("%s: UartHostCreate failed", __func__);
+        return HDF_FAILURE;
+    }
+    uartHost->service.Dispatch = SampleDispatch;
+    return HDF_SUCCESS;
 }
 
-static int32_t HdfUartSampleInit(struct HdfDeviceObject *device)
+static int32_t SampleUartDriverInit(struct HdfDeviceObject *device)
 {
     int32_t ret;
     struct UartHost *host = NULL;
@@ -314,16 +321,16 @@ static int32_t HdfUartSampleInit(struct HdfDeviceObject *device)
         HDF_LOGE("%s: host is NULL", __func__);
         return HDF_FAILURE;
     }
-    ret = SampleAttach(host, device);
+    ret = AttachUartDevice(host, device);
     if (ret != HDF_SUCCESS) {
         HDF_LOGE("%s: attach error", __func__);
         return HDF_FAILURE;
     }
-    host->method = &g_uartSampleHostMethod;
+    host->method = &g_sampleUartHostMethod;
     return ret;
 }
 
-static void HdfUartSampleRelease(struct HdfDeviceObject *device)
+static void SampleUartDriverRelease(struct HdfDeviceObject *device)
 {
     struct UartHost *host = NULL;
     HDF_LOGI("Enter %s:", __func__);
@@ -338,7 +345,7 @@ static void HdfUartSampleRelease(struct HdfDeviceObject *device)
         return;
     }
     if (host->priv != NULL) {
-        SampleDetach(host);
+        DetachUartDevice(host);
     }
     UartHostDestroy(host);
 }