net llc: Don't use sysctl tables with .child entries.

The sysctl core no longer natively understands sysctl tables with .child
entries.

Kill the intermediate tables and use register_net_sysctl directly to
remove the need for compatibility code.
Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
Acked-by: NPavel Emelyanov <xemul@parallels.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/llc/sysctl_net_llc.c

@@ -57,48 +57,29 @@ static struct ctl_table llc_station_table[] = {
 	{ },
 };
 
-static struct ctl_table llc2_dir_timeout_table[] = {
-	{
-		.procname	= "timeout",
-		.mode		= 0555,
-		.child		= llc2_timeout_table,
-	},
-	{ },
-};
-
-static struct ctl_table llc_table[] = {
-	{
-		.procname	= "llc2",
-		.mode		= 0555,
-		.child		= llc2_dir_timeout_table,
-	},
-	{
-		.procname       = "station",
-		.mode           = 0555,
-		.child          = llc_station_table,
-	},
-	{ },
-};
-
-static struct ctl_path llc_path[] = {
-	{ .procname = "net", },
-	{ .procname = "llc", },
-	{ }
-};
-
-static struct ctl_table_header *llc_table_header;
+static struct ctl_table_header *llc2_timeout_header;
+static struct ctl_table_header *llc_station_header;
 
 int __init llc_sysctl_init(void)
 {
-	llc_table_header = register_net_sysctl_table(&init_net, llc_path, llc_table);
+	llc2_timeout_header = register_net_sysctl(&init_net, "net/llc/llc2/timeout", llc2_timeout_table);
+	llc_station_header = register_net_sysctl(&init_net, "net/llc/station", llc_station_table);
 
-	return llc_table_header ? 0 : -ENOMEM;
+	if (!llc2_timeout_header || !llc_station_header) {
+		llc_sysctl_exit();
+		return -ENOMEM;
+	}
+	return 0;
 }
 
 void llc_sysctl_exit(void)
 {
-	if (llc_table_header) {
-		unregister_net_sysctl_table(llc_table_header);
-		llc_table_header = NULL;
+	if (llc2_timeout_header) {
+		unregister_net_sysctl_table(llc2_timeout_header);
+		llc2_timeout_header = NULL;
+	}
+	if (llc_station_header) {
+		unregister_net_sysctl_table(llc_station_header);
+		llc_station_header = NULL;
 	}
 }