netdev - [PATCH] net: propagate dev_get_valid

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Message-Id: <1529400197-24165-1-git-send-email-lirongqing@baidu.com>
Date:   Tue, 19 Jun 2018 17:23:17 +0800
From:   Li RongQing <lirongqing@...du.com>
To:     netdev@...r.kernel.org
Subject: [PATCH] net: propagate dev_get_valid_name return code

if dev_get_valid_name failed, propagate its return code

and remove the setting err to ENODEV, it will be set to
0 again before dev_change_net_namespace exits.

Signed-off-by: Li RongQing <lirongqing@...du.com>
---
 net/core/dev.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 1844d9bc5714..1c7a3761ec3c 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -8661,7 +8661,8 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
 		/* We get here if we can't use the current device name */
 		if (!pat)
 			goto out;
-		if (dev_get_valid_name(net, dev, pat) < 0)
+		err = dev_get_valid_name(net, dev, pat);
+		if (err < 0)
 			goto out;
 	}
 
@@ -8673,7 +8674,6 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
 	dev_close(dev);
 
 	/* And unlink it from device chain */
-	err = -ENODEV;
 	unlist_netdevice(dev);
 
 	synchronize_net();
-- 
2.16.2