diff --git a/bsp/stm32f10x/drivers/gpio.c b/bsp/stm32f10x/drivers/gpio.c
index fd64151b7..abb62311a 100755
--- a/bsp/stm32f10x/drivers/gpio.c
+++ b/bsp/stm32f10x/drivers/gpio.c
@@ -16,8 +16,6 @@
 #include <rthw.h>
 #include <rtdevice.h>
 #include <board.h>
-#include <gpio.h>
-#include <stm32f10x_exti.h>
 
 #ifdef RT_USING_PIN
 
@@ -591,12 +589,12 @@ rt_err_t stm32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_ENOSYS;
+        return -RT_ENOSYS;
     }
     irqindex = bit2bitno(index->pin);
     if(irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
     {
-        return RT_ENOSYS;
+        return -RT_ENOSYS;
     }
 
     level = rt_hw_interrupt_disable();
@@ -612,7 +610,7 @@ rt_err_t stm32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
     if(pin_irq_hdr_tab[irqindex].pin != -1)
     {
         rt_hw_interrupt_enable(level);
-        return RT_EBUSY;
+        return -RT_EBUSY;
     }
     pin_irq_hdr_tab[irqindex].pin = pin;
     pin_irq_hdr_tab[irqindex].hdr = hdr;
@@ -631,12 +629,12 @@ rt_err_t stm32_pin_dettach_irq(struct rt_device *device, rt_int32_t pin)
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_ENOSYS;
+        return -RT_ENOSYS;
     }
     irqindex = bit2bitno(index->pin);
     if(irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
     {
-        return RT_ENOSYS;
+        return -RT_ENOSYS;
     }
 
     level = rt_hw_interrupt_disable();
@@ -667,20 +665,20 @@ rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
     index = get_pin(pin);
     if (index == RT_NULL)
     {
-        return RT_ENOSYS;
+        return -RT_ENOSYS;
     }
     if(enabled == PIN_IRQ_ENABLE)
     {
         irqindex = bit2bitno(index->pin);
         if(irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
         {
-            return RT_ENOSYS;
+            return -RT_ENOSYS;
         }
         level = rt_hw_interrupt_disable();
         if(pin_irq_hdr_tab[irqindex].pin == -1)
         {
             rt_hw_interrupt_enable(level);
-            return RT_ENOSYS;
+            return -RT_ENOSYS;
         }
         irqmap = &pin_irq_map[irqindex];
         /* GPIO Periph clock enable */
@@ -720,7 +718,7 @@ rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
         irqmap = get_pin_irq_map(index->pin);
         if(irqmap == RT_NULL)
         {
-            return RT_ENOSYS;
+            return -RT_ENOSYS;
         }
         EXTI_InitStructure.EXTI_Line = irqmap->irqbit;  
         EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
@@ -730,7 +728,7 @@ rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin,
     }
     else
     {
-        return RT_ENOSYS;
+        return -RT_ENOSYS;
     }
 
     return RT_EOK;