linux-kernel - [PATCH net-next] ipvlan: Remove a useless comparison

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Message-ID: <20181210112538.16324-1-yuehaibing@huawei.com>
Date:   Mon, 10 Dec 2018 19:25:38 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <davem@...emloft.net>, <pabeni@...hat.com>, <idosch@...lanox.com>,
        <ktkhai@...tuozzo.com>, <lucien.xin@...il.com>,
        <petrm@...lanox.com>
CC:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH net-next] ipvlan: Remove a useless comparison

Fix following gcc warning:

drivers/net/ipvlan/ipvlan_main.c:543:12: warning:
 comparison is always false due to limited range of data type [-Wtype-limits]

'mode' is a u16 variable, IPVLAN_MODE_L2 is zero,
the comparison is always false

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/net/ipvlan/ipvlan_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index 4a94956..162a337 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -535,7 +535,7 @@ static int ipvlan_nl_validate(struct nlattr *tb[], struct nlattr *data[],
 	if (data[IFLA_IPVLAN_MODE]) {
 		u16 mode = nla_get_u16(data[IFLA_IPVLAN_MODE]);
 
-		if (mode < IPVLAN_MODE_L2 || mode >= IPVLAN_MODE_MAX)
+		if (mode >= IPVLAN_MODE_MAX)
 			return -EINVAL;
 	}
 	if (data[IFLA_IPVLAN_FLAGS]) {
-- 
2.7.0