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From: Dan Carpenter <dan.carpenter@oracle.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>,
	Michal Kubecek <mkubecek@suse.cz>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Andrew Lunn <andrew@lunn.ch>,
	netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH net] ethtool: linkinfo: remove an unnecessary NULL check
Date: Fri, 05 Jun 2020 11:04:13 +0000	[thread overview]
Message-ID: <20200605110413.GF978434@mwanda> (raw)

This code generates a Smatch warning:

    net/ethtool/linkinfo.c:143 ethnl_set_linkinfo()
    warn: variable dereferenced before check 'info' (see line 119)

Fortunately, the "info" pointer is never NULL so the check can be
removed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 net/ethtool/linkinfo.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ethtool/linkinfo.c b/net/ethtool/linkinfo.c
index 677068deb68c0..5eaf173eaaca5 100644
--- a/net/ethtool/linkinfo.c
+++ b/net/ethtool/linkinfo.c
@@ -140,8 +140,7 @@ int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info)
 
 	ret = __ethtool_get_link_ksettings(dev, &ksettings);
 	if (ret < 0) {
-		if (info)
-			GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
+		GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
 		goto out_ops;
 	}
 	lsettings = &ksettings.base;
-- 
2.26.2

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>,
	Michal Kubecek <mkubecek@suse.cz>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Andrew Lunn <andrew@lunn.ch>,
	netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH net] ethtool: linkinfo: remove an unnecessary NULL check
Date: Fri, 5 Jun 2020 14:04:13 +0300	[thread overview]
Message-ID: <20200605110413.GF978434@mwanda> (raw)

This code generates a Smatch warning:

    net/ethtool/linkinfo.c:143 ethnl_set_linkinfo()
    warn: variable dereferenced before check 'info' (see line 119)

Fortunately, the "info" pointer is never NULL so the check can be
removed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 net/ethtool/linkinfo.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ethtool/linkinfo.c b/net/ethtool/linkinfo.c
index 677068deb68c0..5eaf173eaaca5 100644
--- a/net/ethtool/linkinfo.c
+++ b/net/ethtool/linkinfo.c
@@ -140,8 +140,7 @@ int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info)
 
 	ret = __ethtool_get_link_ksettings(dev, &ksettings);
 	if (ret < 0) {
-		if (info)
-			GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
+		GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
 		goto out_ops;
 	}
 	lsettings = &ksettings.base;
-- 
2.26.2


             reply	other threads:[~2020-06-05 11:04 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-05 11:04 Dan Carpenter [this message]
2020-06-05 11:04 ` [PATCH net] ethtool: linkinfo: remove an unnecessary NULL check Dan Carpenter
2020-06-05 12:31 ` Michal Kubecek
2020-06-05 12:31   ` Michal Kubecek
2020-06-05 20:11 ` David Miller
2020-06-05 20:11   ` David Miller

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