From c2ec0efb903e27f83cb9a54041764f76e2e1d390 Mon Sep 17 00:00:00 2001
From: jiangdongxu <jiangdongxu1@huawei.com>
Date: Fri, 11 Feb 2022 16:12:21 +0800
Subject: [PATCH 1/6] seabios: convert value of be16_to_cpu to u64 before
 shifting

be16_to_cpu(scsi_lun->lun[i]) is 16 bits and left shifting by more than 16 will have undefined behaviour.
convert it to u64 before shifting.

Signed-off-by: liuxiangdong <liuxiangdong5@huawei.com>
Signed-off-by: jiangdongxu <jiangdongxu1@huawei.com>
---
 roms/seabios/src/hw/blockcmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/roms/seabios/src/hw/blockcmd.c b/roms/seabios/src/hw/blockcmd.c
index 6b6fea9707..af6d33544f 100644
--- a/roms/seabios/src/hw/blockcmd.c
+++ b/roms/seabios/src/hw/blockcmd.c
@@ -210,7 +210,7 @@ static u64 scsilun2u64(struct scsi_lun *scsi_lun)
     int i;
     u64 ret = 0;
     for (i = 0; i < ARRAY_SIZE(scsi_lun->lun); i++)
-        ret |= be16_to_cpu(scsi_lun->lun[i]) << (16 * i);
+        ret |= (u64)be16_to_cpu(scsi_lun->lun[i]) << (16 * i);
     return ret;
 }
 
-- 
2.27.0