diff --git a/bsp/jz47xx/board.c b/bsp/jz47xx/board.c
index b2f1ba0092bd2ea2f2d0efc9006469581bad3238..c742d32e7d534e4f0a28892e296c4453511f7912 100644
--- a/bsp/jz47xx/board.c
+++ b/bsp/jz47xx/board.c
@@ -39,7 +39,7 @@ void rt_hw_timer_handler(int vector, void* param)
 /**
  * This function will initial OS timer
  */
-void rt_hw_timer_init()
+void rt_hw_timer_init(void)
 {
 	rt_uint32_t val;
 
diff --git a/bsp/jz47xx/uart.c b/bsp/jz47xx/uart.c
index 309a89d63f5704c6feb2f81ac5f860add5aa6906..18edad9d67eb9804011079944ff9a8c7642d4b40 100644
--- a/bsp/jz47xx/uart.c
+++ b/bsp/jz47xx/uart.c
@@ -10,7 +10,7 @@
 /*@{*/
 #if defined(RT_USING_UART) && defined(RT_USING_DEVICE)
 
-#define UART_BAUDRATE   115200
+#define UART_BAUDRATE   57600
 #define DEV_CLK         12000000
 
 /*
diff --git a/libcpu/mips/jz47xx/interrupt.c b/libcpu/mips/jz47xx/interrupt.c
index f9ada3254a74ace9d5302fc61ce0462b34b62f76..0ea4827ee2c0c5f6567fbfe328bd89f31fddadf1 100644
--- a/libcpu/mips/jz47xx/interrupt.c
+++ b/libcpu/mips/jz47xx/interrupt.c
@@ -90,7 +90,9 @@ rt_isr_handler_t rt_hw_interrupt_install(int vector,
 	{
         old_handler = irq_handle_table[vector].handler;
 
+#ifdef RT_USING_INTERRUPT_INFO
         rt_strncpy(irq_handle_table[vector].name, name, RT_NAME_MAX);
+#endif /* RT_USING_INTERRUPT_INFO */
         irq_handle_table[vector].handler = handler;
         irq_handle_table[vector].param = param;
 	}
@@ -118,6 +120,10 @@ void rt_interrupt_dispatch(void *ptreg)
 			/* do interrupt */
 			(*irq_func)(i, irq_handle_table[i].param);
 
+#ifdef RT_USING_INTERRUPT_INFO
+			irq_handle_table[i].counter++;
+#endif /* RT_USING_INTERRUPT_INFO */
+
 			/* ack interrupt */
 			INTC_IPR = (1 << i);
 		}