From cfa3b33849182b6330f9eb71e741a5e83b6a598b Mon Sep 17 00:00:00 2001
From: Huaqi Fang <578567190@qq.com>
Date: Wed, 16 Dec 2020 16:41:43 +0800
Subject: [PATCH] SoC: Fix implementation of uart_read of hbirdv2 SoC

Signed-off-by: Huaqi Fang <578567190@qq.com>
---
 SoC/hbirdv2/Common/Source/Drivers/hbirdv2_uart.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/SoC/hbirdv2/Common/Source/Drivers/hbirdv2_uart.c b/SoC/hbirdv2/Common/Source/Drivers/hbirdv2_uart.c
index 2f5011b..4f2b820 100644
--- a/SoC/hbirdv2/Common/Source/Drivers/hbirdv2_uart.c
+++ b/SoC/hbirdv2/Common/Source/Drivers/hbirdv2_uart.c
@@ -87,6 +87,7 @@ uint8_t uart_read(UART_TypeDef *uart)
         return -1;
     }
     
+    while ((uart->LSR & 0x1) == 0);
     reg = uart->RBR;
     
     return (uint8_t)(reg & 0xFF);