batman-adv: handle routing code initialization properly

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 4cc66db699ed..271467033a1c 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -30,10 +30,11 @@
 #include "send.h"
 #include "bat_algo.h"
 
-static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface)
+static int bat_iv_ogm_iface_enable(struct hard_iface *hard_iface)
 {
         struct batman_ogm_packet *batman_ogm_packet;
         uint32_t random_seqno;
+        int res = -1;
 
         /* randomize initial seqno to avoid collision */
         get_random_bytes(&random_seqno, sizeof(random_seqno));
@@ -42,6 +43,9 @@ static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface)
         hard_iface->packet_len = BATMAN_OGM_LEN;
         hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
 
+        if (!hard_iface->packet_buff)
+                goto out;
+
         batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
         batman_ogm_packet->header.packet_type = BAT_OGM;
         batman_ogm_packet->header.version = COMPAT_VERSION;
@@ -50,6 +54,11 @@ static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface)
         batman_ogm_packet->tq = TQ_MAX_VALUE;
         batman_ogm_packet->tt_num_changes = 0;
         batman_ogm_packet->ttvn = 0;
+
+        res = 0;
+
+out:
+        return res;
 }
 
 static void bat_iv_ogm_iface_disable(struct hard_iface *hard_iface)