linux-kernel - [PATCH net] Revert "macsec: missing dev_put() on error in macsec

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Message-ID: <20180416101750.GA19613@mwanda>
Date:   Mon, 16 Apr 2018 13:17:50 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Laura Abbott <labbott@...hat.com>,
        Sabrina Dubroca <sd@...asysnail.net>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        netdev@...r.kernel.org
Subject: [PATCH net] Revert "macsec: missing dev_put() on error in
 macsec_newlink()"

This patch is just wrong, sorry.  I was trying to fix a static checker
warning and misread the code.  The reference taken in macsec_newlink()
is released in macsec_free_netdev() when the netdevice is destroyed.

This reverts commit 5dcd8400884cc4a043a6d4617e042489e5d566a9.

Reported-by: Laura Abbott <labbott@...hat.com>
Fixes: 5dcd8400884c ("macsec: missing dev_put() on error in macsec_newlink()")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Acked-by: Sabrina Dubroca <sd@...asysnail.net>
---
I sent this earlier but I messed up the CC list.  I've updated the
commit message as well.

 drivers/net/macsec.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 9cbb0c8a896a..7de88b33d5b9 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -3277,7 +3277,7 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
 
 	err = netdev_upper_dev_link(real_dev, dev, extack);
 	if (err < 0)
-		goto put_dev;
+		goto unregister;
 
 	/* need to be already registered so that ->init has run and
 	 * the MAC addr is set
@@ -3316,8 +3316,7 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
 	macsec_del_dev(macsec);
 unlink:
 	netdev_upper_dev_unlink(real_dev, dev);
-put_dev:
-	dev_put(real_dev);
+unregister:
 	unregister_netdevice(dev);
 	return err;
 }
-- 
2.16.2