[PATCH net-next 2/3] ethtool: use netdev_unregistering instead of open code

[Juhee Kang <claudiajkang@gmail.com>]

The open code is defined as a helper function(netdev_unregistering)
on netdev.h, which the open code is dev->reg_state == NETREG_UNREGISTERING.
Thus, netdev_unregistering() replaces the open code. This patch doesn't
change logic.

Signed-off-by: Juhee Kang <claudiajkang@gmail.com>
---
 net/ethtool/netlink.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c
index f4e41a6e0163..835b13264b15 100644
--- a/net/ethtool/netlink.c
+++ b/net/ethtool/netlink.c
@@ -40,8 +40,7 @@ int ethnl_ops_begin(struct net_device *dev)
 	if (dev->dev.parent)
 		pm_runtime_get_sync(dev->dev.parent);
 
-	if (!netif_device_present(dev) ||
-	    dev->reg_state == NETREG_UNREGISTERING) {
+	if (!netif_device_present(dev) || netdev_unregistering(dev)) {
 		ret = -ENODEV;
 		goto err;
 	}
-- 
2.34.1