ethtool: Use explicit designated initializers for .cmd

Initialize the .cmd member by using a designated struct
initializer. This fixes warning of missing field initializers,
and makes code a little easier to read.
Signed-off-by: NLi RongQing <lirongqing@baidu.com>
Reviewed-by: NMichal Kubecek <mkubecek@suse.cz>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/ethtool.c

@@ -1717,7 +1717,7 @@ static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
 
 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
 {
-	struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
+	struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM };
 
 	if (!dev->ethtool_ops->get_pauseparam)
 		return -EOPNOTSUPP;
@@ -2503,7 +2503,7 @@ static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
 
 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
 {
-	struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
+	struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
 	int rc;
 
 	if (!dev->ethtool_ops->get_fecparam)