2 files changed, 5 insertions, 10 deletions
diff --git a/bsp/qemu-vexpress-a9/drivers/board.c b/bsp/qemu-vexpress-a9/drivers/board.c
index e236c68b80..84af3c1ccd 100644
--- a/bsp/qemu-vexpress-a9/drivers/board.c
+++ b/bsp/qemu-vexpress-a9/drivers/board.c
@@ -55,3 +55,8 @@ void rt_hw_board_init(void)
     rt_hw_ipi_handler_install(RT_SCHEDULE_IPI, rt_scheduler_ipi_handler);
 #endif
 }
+
+void rt_hw_us_delay(rt_uint32_t us)
+{
+
+}
diff --git a/bsp/qemu-vexpress-a9/drivers/drv_smc911x.c b/bsp/qemu-vexpress-a9/drivers/drv_smc911x.c
index 2b2253328d..9d52b258af 100644
--- a/bsp/qemu-vexpress-a9/drivers/drv_smc911x.c
+++ b/bsp/qemu-vexpress-a9/drivers/drv_smc911x.c
@@ -33,16 +33,6 @@ struct eth_device_smc911x
 };
 static struct eth_device_smc911x _emac;
 
-int udelay(int value)
-{
-    return 0;
-}
-
-int mdelay(int value)
-{
-    return 0;
-}
-
 #if defined (CONFIG_SMC911X_32_BIT)
 rt_inline uint32_t smc911x_reg_read(struct eth_device_smc911x *dev, uint32_t offset)
 {