diff --git a/components/drivers/phy/phy.c b/components/drivers/phy/phy.c
index 87152a306e..8e91aea99f 100644
--- a/components/drivers/phy/phy.c
+++ b/components/drivers/phy/phy.c
@@ -60,7 +60,7 @@ rt_err_t rt_hw_phy_register(struct rt_phy_device *phy, const char *name)
     device->tx_complete = RT_NULL;
 
 #ifdef RT_USING_DEVICE_OPS
-    device->ops = phy_ops;
+    device->ops = &phy_ops;
 #else
     device->init = NULL;
     device->open = NULL;
diff --git a/components/drivers/usb/usbdevice/class/cdc_vcom.c b/components/drivers/usb/usbdevice/class/cdc_vcom.c
index 3564330578..1a24b79f2e 100644
--- a/components/drivers/usb/usbdevice/class/cdc_vcom.c
+++ b/components/drivers/usb/usbdevice/class/cdc_vcom.c
@@ -10,11 +10,11 @@
  * 2013-06-25     heyuanjie87  remove SOF mechinism
  * 2013-07-20     Yi Qiu       do more test
  * 2016-02-01     Urey         Fix some error
+ * 2021-10-14     mazhiyuan    Fix some error
  */
 
 #include <rthw.h>
 #include <rtdevice.h>
-#include <drivers/serial.h>
 #include "drivers/usb_device.h"
 #include "cdc.h"
 
@@ -738,7 +738,7 @@ static rt_size_t _vcom_rb_block_put(struct vcom *data, const rt_uint8_t *buf, rt
     return size;
 }
 
-static rt_size_t _vcom_tx(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size,int direction)
+static rt_size_t _vcom_tx(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size,rt_uint32_t direction)
 {
     struct ufunction *func;
     struct vcom *data;
@@ -939,8 +939,12 @@ static void rt_usb_vcom_init(struct ufunction *func)
     config.parity       = PARITY_NONE;
     config.bit_order    = BIT_ORDER_LSB;
     config.invert       = NRZ_NORMAL;
+#if defined(RT_USING_SERIAL_V1)
     config.bufsz        = CDC_RX_BUFSIZE;
-
+#elif defined(RT_USING_SERIAL_V2)
+    config.rx_bufsz     = CDC_RX_BUFSIZE;
+    config.tx_bufsz     = CDC_TX_BUFSIZE;
+#endif
     data->serial.ops        = &usb_vcom_ops;
     data->serial.serial_rx  = RT_NULL;
     data->serial.config     = config;
diff --git a/components/drivers/usb/usbdevice/class/ecm.c b/components/drivers/usb/usbdevice/class/ecm.c
index d6d98478f8..575da357e5 100644
--- a/components/drivers/usb/usbdevice/class/ecm.c
+++ b/components/drivers/usb/usbdevice/class/ecm.c
@@ -644,12 +644,16 @@ ufunction_t rt_usbd_function_ecm_create(udevice_t device)
     _ecm_eth->host_addr[4] = 0xEC;//*(const rt_uint8_t *)(0x1fff7a14);
     _ecm_eth->host_addr[5] = 0xAB;//*(const rt_uint8_t *)(0x1fff7a18);
 
+#ifdef RT_USING_DEVICE_OPS
+    _ecm_eth->parent.parent.ops = &ecm_device_ops;
+#else
     _ecm_eth->parent.parent.init       = rt_ecm_eth_init;
     _ecm_eth->parent.parent.open       = rt_ecm_eth_open;
     _ecm_eth->parent.parent.close      = rt_ecm_eth_close;
     _ecm_eth->parent.parent.read       = rt_ecm_eth_read;
     _ecm_eth->parent.parent.write      = rt_ecm_eth_write;
     _ecm_eth->parent.parent.control    = rt_ecm_eth_control;
+#endif
     _ecm_eth->parent.parent.user_data  = device;
 
     _ecm_eth->parent.eth_rx     = rt_ecm_eth_rx;