4 files changed, 8 insertions, 8 deletions
diff --git a/bsp/hifive1/applications/main.c b/bsp/hifive1/applications/main.c
index ef6521a942..e3cd69f303 100644
--- a/bsp/hifive1/applications/main.c
+++ b/bsp/hifive1/applications/main.c
@@ -14,5 +14,5 @@
 
 int main(void)
 {
-	return 0;
+    return 0;
 }
diff --git a/bsp/hifive1/drivers/drv_usart.c b/bsp/hifive1/drivers/drv_usart.c
index c7c88d6861..935d39105f 100644
--- a/bsp/hifive1/drivers/drv_usart.c
+++ b/bsp/hifive1/drivers/drv_usart.c
@@ -23,7 +23,7 @@ static rt_err_t usart_configure(struct rt_serial_device *serial,
 {
     RT_ASSERT(serial != RT_NULL);
     RT_ASSERT(cfg != RT_NULL);
- 
+
     GPIO_REG(GPIO_IOF_SEL) &= ~IOF0_UART0_MASK;
     GPIO_REG(GPIO_IOF_EN) |= IOF0_UART0_MASK;
 
diff --git a/bsp/hifive1/drivers/interrupt.c b/bsp/hifive1/drivers/interrupt.c
index 1d4ae50626..75e8e8ac59 100644
--- a/bsp/hifive1/drivers/interrupt.c
+++ b/bsp/hifive1/drivers/interrupt.c
@@ -48,13 +48,13 @@ rt_isr_handler_t rt_hw_interrupt_handle(rt_uint32_t vector, void *param)
 void rt_hw_interrupt_init(void)
 {
     int idx;
-    
+
     /*  config interrupt vector*/
     asm volatile(
         "la t0, trap_entry\n"
         "csrw mtvec, t0"
     );
-    
+
     /*  enable global interrupt*/
     PLIC_init(&g_plic,
             PLIC_CTRL_ADDR,
@@ -72,8 +72,8 @@ void rt_hw_interrupt_init(void)
         irq_desc[idx].counter = 0;
 #endif
     }
-    
-    // enable machine external interrupt 
+
+    // enable machine external interrupt
     set_csr(mie, MIP_MEIP);
 }
 
@@ -118,7 +118,7 @@ rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
 }
 
 /**
- * This function will be call when external machine-level 
+ * This function will be call when external machine-level
  * interrupt from PLIC occurred.
  */
 void handle_m_ext_interrupt(void)
diff --git a/bsp/hifive1/drivers/interrupt.h b/bsp/hifive1/drivers/interrupt.h
index aee7ded426..52d378233a 100644
--- a/bsp/hifive1/drivers/interrupt.h
+++ b/bsp/hifive1/drivers/interrupt.h
@@ -19,5 +19,5 @@ rt_uint32_t rt_hw_interrupt_get_active(rt_uint32_t fiq_irq);
 void rt_hw_interrupt_ack(rt_uint32_t fiq_irq, rt_uint32_t id);
 rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
         void *param, const char *name);
-        
+
 #endif