net: remove unnecessary carrier status check
authorZhang Shengju <zhangshengju@cmss.chinamobile.com>
Wed, 26 Apr 2017 09:49:38 +0000 (17:49 +0800)
committerDavid S. Miller <davem@davemloft.net>
Thu, 27 Apr 2017 20:31:05 +0000 (16:31 -0400)
commit0575c86b5dd596253bdfc0365b570d67b1a12523
treed8b5e683dfca962f0e495b919c283132165b6a1a
parent8ecbc40ada116f2f7d6b61cd646802c87b7c5c7d
net: remove unnecessary carrier status check

Since netif_carrier_on() will do nothing if device's carrier is already
on, so it's unnecessary to do carrier status check.

It's the same for netif_carrier_off().

Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/dev.c