batman-adv: consolidate duplicated primary_if checking code

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 112edd3..d87d9b4 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -434,22 +434,10 @@
 	struct hlist_node *node;
 	struct hlist_head *head;
 	uint32_t i;
-	int ret = 0;
 
-	primary_if = batadv_primary_if_get_selected(bat_priv);
-	if (!primary_if) {
-		ret = seq_printf(seq,
-				 "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
-				 net_dev->name);
+	primary_if = batadv_seq_print_text_primary_if_get(seq);
+	if (!primary_if)
 		goto out;
-	}
-
-	if (primary_if->if_status != BATADV_IF_ACTIVE) {
-		ret = seq_printf(seq,
-				 "BATMAN mesh %s disabled - primary interface not active\n",
-				 net_dev->name);
-		goto out;
-	}
 
 	seq_printf(seq,
 		   "Locally retrieved addresses (from %s) announced via TT (TTVN: %u):\n",
@@ -479,7 +467,7 @@
 out:
 	if (primary_if)
 		batadv_hardif_free_ref(primary_if);
-	return ret;
+	return 0;
 }
 
 static void
@@ -842,22 +830,10 @@
 	struct hlist_node *node;
 	struct hlist_head *head;
 	uint32_t i;
-	int ret = 0;
 
-	primary_if = batadv_primary_if_get_selected(bat_priv);
-	if (!primary_if) {
-		ret = seq_printf(seq,
-				 "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
-				 net_dev->name);
+	primary_if = batadv_seq_print_text_primary_if_get(seq);
+	if (!primary_if)
 		goto out;
-	}
-
-	if (primary_if->if_status != BATADV_IF_ACTIVE) {
-		ret = seq_printf(seq,
-				 "BATMAN mesh %s disabled - primary interface not active\n",
-				 net_dev->name);
-		goto out;
-	}
 
 	seq_printf(seq,
 		   "Globally announced TT entries received via the mesh %s\n",
@@ -881,7 +857,7 @@
 out:
 	if (primary_if)
 		batadv_hardif_free_ref(primary_if);
-	return ret;
+	return 0;
 }
 
 /* deletes the orig list of a tt_global_entry */