linux-kernel - [PATCH v3 net-next] ipvlan: fix sparse warning about _

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Message-ID: <20251121155112.4182007-1-skorodumov.dmitry@huawei.com>
Date: Fri, 21 Nov 2025 18:51:08 +0300
From: Dmitry Skorodumov <skorodumov.dmitry@...wei.com>
To: <netdev@...r.kernel.org>, Dmitry Skorodumov
	<skorodumov.dmitry@...wei.com>, Jakub Kicinski <kuba@...nel.org>, Eric
 Dumazet <edumazet@...gle.com>, Julian Vetter <julian@...er-limits.org>,
	Guillaume Nault <gnault@...hat.com>, <linux-kernel@...r.kernel.org>
CC: Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
	<davem@...emloft.net>, Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH v3 net-next] ipvlan: fix sparse warning about __be32 -> u32

Fixed a sparse warning:

ipvlan_core.c:56: warning: incorrect type in argument 1
(different base types) expected unsigned int [usertype] a
got restricted __be32 const [usertype] s_addr

Force cast the s_addr to u32

Signed-off-by: Dmitry Skorodumov <skorodumov.dmitry@...wei.com>
---
 drivers/net/ipvlan/ipvlan_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
index d7e3ddbcab6f..dea411e132db 100644
--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -52,8 +52,8 @@ static u8 ipvlan_get_v4_hash(const void *iaddr)
 {
 	const struct in_addr *ip4_addr = iaddr;
 
-	return jhash_1word(ip4_addr->s_addr, ipvlan_jhash_secret) &
-	       IPVLAN_HASH_MASK;
+	return jhash_1word((__force u32)ip4_addr->s_addr, ipvlan_jhash_secret) &
+			   IPVLAN_HASH_MASK;
 }
 
 static bool addr_equal(bool is_v6, struct ipvl_addr *addr, const void *iaddr)
-- 
2.25.1