diff --git a/bsp/raspberry-pi/raspi4-32/driver/board.c b/bsp/raspberry-pi/raspi4-32/driver/board.c
index f3d683bfc1a7be4fc41e71d18ba8f5c2c140f60c..8eeca85f50bbb7fe222a7eea483241d6e393ae7f 100644
--- a/bsp/raspberry-pi/raspi4-32/driver/board.c
+++ b/bsp/raspberry-pi/raspi4-32/driver/board.c
@@ -46,10 +46,10 @@ size_t mbox_addr = MBOX_ADDR;
 
 size_t wdt_base_addr = WDT_BASE;
 
-void* mac_reg_base_addr = (void *)MAC_REG;
+uint8_t *mac_reg_base_addr = (uint8_t *)MAC_REG;
 
-void* eth_send_no_cache = (void *)SEND_DATA_NO_CACHE;
-void* eth_recv_no_cache = (void *)RECV_DATA_NO_CACHE;
+uint8_t *eth_send_no_cache = (uint8_t *)SEND_DATA_NO_CACHE;
+uint8_t *eth_recv_no_cache = (uint8_t *)RECV_DATA_NO_CACHE;
 
 #ifdef RT_USING_USERSPACE
 struct mem_desc platform_mem_desc[] = {
@@ -188,31 +188,3 @@ void rt_hw_board_init(void)
     rt_components_board_init();
 #endif
 }
-
-#ifdef RT_USING_GDBSERVER
-#include <dfs_posix.h>
-
-#define GDB_CONNECT_DEVICE "/dev/uart4"
-
-/* for gdb */
-int gdb_com_open(void)
-{
-    return open(GDB_CONNECT_DEVICE, O_RDWR);
-}
-
-void gdb_com_close(int fd)
-{
-    close(fd);
-}
-
-ssize_t gdb_com_read(int fd, void *buff, size_t len)
-{
-    return read(fd, buff, len);
-}
-
-ssize_t gdb_com_write(int fd, void *buff, size_t len)
-{
-    return write(fd, buff, len);
-}
-
-#endif
diff --git a/bsp/raspberry-pi/raspi4-32/driver/drv_eth.c b/bsp/raspberry-pi/raspi4-32/driver/drv_eth.c
index 12c7ee89e89ed22a64b43bf90028651b864ef75a..8ab6fc79a3aa42f8dd0c6add2c9fbf1be9bf363f 100644
--- a/bsp/raspberry-pi/raspi4-32/driver/drv_eth.c
+++ b/bsp/raspberry-pi/raspi4-32/driver/drv_eth.c
@@ -49,7 +49,6 @@ static rt_uint32_t rx_index = 0;
 static rt_uint32_t index_flag = 0;
 
 static rt_uint8_t send_cache_pbuf[RECV_CACHE_BUF];
-static rt_uint8_t recv_data[RX_BUF_LENGTH];
 
 struct rt_eth_dev
 {
@@ -430,7 +429,7 @@ static rt_uint32_t bcmgenet_gmac_eth_recv(rt_uint8_t **packetp)
     }
     else
     {
-        if(prev_recv_cnt == prod_index)
+        if(prev_recv_cnt == (prod_index & 0xffffUL))
         {
             return 0;
         }
diff --git a/bsp/raspberry-pi/raspi4-32/driver/drv_uart.c b/bsp/raspberry-pi/raspi4-32/driver/drv_uart.c
index 31331a4609829d590b77b7593c47db54b597f8de..e0b849c34dd3b4f4e7ca76c67ad0f098b5ef31c7 100644
--- a/bsp/raspberry-pi/raspi4-32/driver/drv_uart.c
+++ b/bsp/raspberry-pi/raspi4-32/driver/drv_uart.c
@@ -117,16 +117,6 @@ static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg
     switch (cmd)
     {
     case RT_DEVICE_CTRL_CLR_INT:
-        /* disable rx irq */
-        if(uart->hw_base == AUX_BASE)
-        {
-            AUX_MU_IER_REG(uart->hw_base) = 0x0;
-        }
-        else
-        {
-            PL011_REG_IMSC(uart->hw_base) &= ~((uint32_t)PL011_IMSC_RXIM);
-        }
-        rt_hw_interrupt_mask(uart->irqno);
         break;
 
     case RT_DEVICE_CTRL_SET_INT:
diff --git a/bsp/raspberry-pi/raspi4-32/driver/raspi4.h b/bsp/raspberry-pi/raspi4-32/driver/raspi4.h
index e0afd1f712682a37141756346e3fad4f06880651..be46bfd9589a29b2c50b75519ac6232349879754 100644
--- a/bsp/raspberry-pi/raspi4-32/driver/raspi4.h
+++ b/bsp/raspberry-pi/raspi4-32/driver/raspi4.h
@@ -165,15 +165,15 @@ extern uint32_t mmc2_base_addr;
 
 //mac
 #define MAC_REG                 (void *)(0xfd580000)
-extern void *                   mac_reg_base_addr;
+extern uint8_t *                   mac_reg_base_addr;
 
 #define ETH_IRQ                 (160+29)
 
 #define SEND_DATA_NO_CACHE      (0x08200000)
-extern void *                   eth_send_no_cache;
+extern uint8_t *                   eth_send_no_cache;
 
 #define RECV_DATA_NO_CACHE      (0x08400000)
-extern void *                   eth_recv_no_cache;
+extern uint8_t *                   eth_recv_no_cache;
 
 /* the basic constants and interfaces needed by gic */
 rt_inline rt_uint32_t platform_get_gic_dist_base(void)
diff --git a/bsp/raspberry-pi/raspi4-64/drivers/board.c b/bsp/raspberry-pi/raspi4-64/drivers/board.c
index e5960b0fa56b72200059785693b110814e87f385..6bc919595d78a8957191661bbb3f2169c6eb48ae 100644
--- a/bsp/raspberry-pi/raspi4-64/drivers/board.c
+++ b/bsp/raspberry-pi/raspi4-64/drivers/board.c
@@ -46,10 +46,10 @@ size_t mbox_addr = MBOX_ADDR;
 
 size_t wdt_base_addr = WDT_BASE;
 
-void* mac_reg_base_addr = (void *)MAC_REG;
+uint8_t *mac_reg_base_addr = (uint8_t *)MAC_REG;
 
-void* eth_send_no_cache = (void *)SEND_DATA_NO_CACHE;
-void* eth_recv_no_cache = (void *)RECV_DATA_NO_CACHE;
+uint8_t *eth_send_no_cache = (uint8_t *)SEND_DATA_NO_CACHE;
+uint8_t *eth_recv_no_cache = (uint8_t *)RECV_DATA_NO_CACHE;
 
 #ifdef RT_USING_USERSPACE
 struct mem_desc platform_mem_desc[] = {
diff --git a/bsp/raspberry-pi/raspi4-64/drivers/drv_eth.c b/bsp/raspberry-pi/raspi4-64/drivers/drv_eth.c
index 29b598b1f5e8d9c2e0687a89f5b94422312cd30e..da65b94bb9e3d53ce9288c476eb82cbcff97bc21 100644
--- a/bsp/raspberry-pi/raspi4-64/drivers/drv_eth.c
+++ b/bsp/raspberry-pi/raspi4-64/drivers/drv_eth.c
@@ -431,7 +431,7 @@ static rt_uint32_t bcmgenet_gmac_eth_recv(rt_uint8_t **packetp)
     }
     else
     {
-        if(prev_recv_cnt == prod_index)
+        if(prev_recv_cnt == (prod_index & 0xffffUL))
         {
             return 0;
         }
diff --git a/bsp/raspberry-pi/raspi4-64/drivers/drv_uart.c b/bsp/raspberry-pi/raspi4-64/drivers/drv_uart.c
index 31331a4609829d590b77b7593c47db54b597f8de..e0b849c34dd3b4f4e7ca76c67ad0f098b5ef31c7 100644
--- a/bsp/raspberry-pi/raspi4-64/drivers/drv_uart.c
+++ b/bsp/raspberry-pi/raspi4-64/drivers/drv_uart.c
@@ -117,16 +117,6 @@ static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg
     switch (cmd)
     {
     case RT_DEVICE_CTRL_CLR_INT:
-        /* disable rx irq */
-        if(uart->hw_base == AUX_BASE)
-        {
-            AUX_MU_IER_REG(uart->hw_base) = 0x0;
-        }
-        else
-        {
-            PL011_REG_IMSC(uart->hw_base) &= ~((uint32_t)PL011_IMSC_RXIM);
-        }
-        rt_hw_interrupt_mask(uart->irqno);
         break;
 
     case RT_DEVICE_CTRL_SET_INT:
diff --git a/bsp/raspberry-pi/raspi4-64/drivers/raspi4.h b/bsp/raspberry-pi/raspi4-64/drivers/raspi4.h
index cff7ab906a475802abd93d90a2abfec231d16171..f3e6ed89274fd7a91452bafb4f950cc2437ba5c2 100644
--- a/bsp/raspberry-pi/raspi4-64/drivers/raspi4.h
+++ b/bsp/raspberry-pi/raspi4-64/drivers/raspi4.h
@@ -165,15 +165,15 @@ extern size_t mmc2_base_addr;
 
 //mac
 #define MAC_REG                 (void *)(0xfd580000)
-extern void *                   mac_reg_base_addr;
+extern uint8_t *                mac_reg_base_addr;
 
 #define ETH_IRQ                 (160+29)
 
 #define SEND_DATA_NO_CACHE      (0x08200000)
-extern void *                   eth_send_no_cache;
+extern uint8_t *                eth_send_no_cache;
 
 #define RECV_DATA_NO_CACHE      (0x08400000)
-extern void *                   eth_recv_no_cache;
+extern uint8_t *                eth_recv_no_cache;
 
 /* the basic constants and interfaces needed by gic */
 rt_inline size_t platform_get_gic_dist_base(void)
diff --git a/components/finsh/msh.c b/components/finsh/msh.c
index 1ebb21df087c62e09806f30e7b1a9018f53fc953..4e3323a821c759d86d21d5333639d4ad2f64c00d 100644
--- a/components/finsh/msh.c
+++ b/components/finsh/msh.c
@@ -314,6 +314,7 @@ int _msh_exec_lwp(char *cmd, rt_size_t length)
     char *argv[FINSH_ARG_MAX];
     int fd = -1;
     char *pg_name;
+    int ret;
 
     /* find the size of first command */
     while ((cmd[cmd0_size] != ' ' && cmd[cmd0_size] != '\t') && cmd0_size < length)
@@ -364,14 +365,14 @@ int _msh_exec_lwp(char *cmd, rt_size_t length)
     close(fd);
 
 #ifdef RT_USING_GDBSERVER
-    exec(pg_name, debug, argc, argv);
+    ret = exec(pg_name, debug, argc, argv);
 #else
-    exec(pg_name, argc, argv);
+    ret = exec(pg_name, argc, argv);
 #endif
     if (pg_name != argv[0])
         rt_free(pg_name);
 
-    return 0;
+    return ret;
 }
 #endif