diff --git a/drivers/soc/rockchip/rk_fiq_debugger.c b/drivers/soc/rockchip/rk_fiq_debugger.c
index 00b71e52bc6b..f1ceb2b55964 100755
--- a/drivers/soc/rockchip/rk_fiq_debugger.c
+++ b/drivers/soc/rockchip/rk_fiq_debugger.c
@@ -171,6 +171,8 @@ static int debug_getc(struct platform_device *pdev)
 		} else {
 			return temp;
 		}
+	} else {
+		rk_fiq_read(t, UART_RX);
 	}
 
 	return FIQ_DEBUGGER_NO_CHAR;