netdev - [PATCH net-next 2/3] ethtool: fec: fix FEC

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Message-Id: <20210326202223.302085-3-kuba@kernel.org>
Date:   Fri, 26 Mar 2021 13:22:22 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, andrew@...n.ch, mkubecek@...e.cz,
        Jakub Kicinski <kuba@...nel.org>,
        kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH net-next 2/3] ethtool: fec: fix FEC_NONE check

Dan points out we need to use the mask not the bit (which is 0).

Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Fixes: 42ce127d9864 ("ethtool: fec: sanitize ethtool_fecparam->fec")
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 net/ethtool/ioctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 8797533ddc4b..26b3e7086075 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -2586,7 +2586,7 @@ static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
 	if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
 		return -EFAULT;
 
-	if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE_BIT)
+	if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE)
 		return -EINVAL;
 
 	fecparam.active_fec = 0;
-- 
2.30.2