From: Tan Xiaojun <tanxiaojun@huawei.com>
Date: Wed, 4 Apr 2018 17:40:48 +0800
Subject: net: hns3: fix length overflow when CONFIG_ARM64_64K_PAGES
Patch-mainline: v4.17-rc1
Git-commit: 48d154e7f56ed03c61a02436e86d25e6b37c0256
References: bsc#1104353 FATE#326415

When enable the config item "CONFIG_ARM64_64K_PAGES", the size of PAGE_SIZE
is 65536(64K). But the type of length is u16, it will overflow. So change it
to u32.

Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -288,7 +288,7 @@ struct hns3_desc_cb {
 	u16 page_offset;
 	u16 reuse_flag;
 
-	u16 length;     /* length of the buffer */
+	u32 length;     /* length of the buffer */
 
        /* desc type, used by the ring user to mark the type of the priv data */
 	u16 type;