kill dev_ifname32()

same story...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

net/socket.c

@@ -2666,25 +2666,6 @@ static int do_siocgstampns(struct net *net, struct socket *sock,
 	return err;
 }
 
-static int dev_ifname32(struct net *net, struct compat_ifreq __user *uifr32)
-{
-	struct ifreq __user *uifr;
-	int err;
-
-	uifr = compat_alloc_user_space(sizeof(struct ifreq));
-	if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq)))
-		return -EFAULT;
-
-	err = dev_ioctl(net, SIOCGIFNAME, uifr);
-	if (err)
-		return err;
-
-	if (copy_in_user(uifr32, uifr, sizeof(struct compat_ifreq)))
-		return -EFAULT;
-
-	return 0;
-}
-
 static int compat_dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32)
 {
 	struct compat_ifconf ifc32;
@@ -3034,8 +3015,6 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock,
 	case SIOCSIFBR:
 	case SIOCGIFBR:
 		return old_bridge_ioctl(argp);
-	case SIOCGIFNAME:
-		return dev_ifname32(net, argp);
 	case SIOCGIFCONF:
 		return compat_dev_ifconf(net, argp);
 	case SIOCETHTOOL:
@@ -3112,6 +3091,7 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock,
 	case SIOCBONDRELEASE:
 	case SIOCBONDSETHWADDR:
 	case SIOCBONDCHANGEACTIVE:
+	case SIOCGIFNAME:
 		return sock_do_ioctl(net, sock, cmd, arg);
 	}