[PATCH net-next 1/1] net: vlan: Use sizeof instead of literal number

[fgao]

From: Gao Feng <f...@ikuai8.com>

Use sizeof variable instead of literal number to enhance the readability.

Signed-off-by: Gao Feng <f...@ikuai8.com>
---
 net/8021q/vlan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 8de138d..5a3903b 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -515,8 +515,8 @@ static int vlan_ioctl_handler(struct net *net, void __user 
*arg)
                return -EFAULT;
 
        /* Null terminate this sucker, just in case. */
-       args.device1[23] = 0;
-       args.u.device2[23] = 0;
+       args.device1[sizeof(args.device1) - 1] = 0;
+       args.u.device2[sizeof(args.u.device2) - 1] = 0;
 
        rtnl_lock();
 
-- 
1.9.1