batman-adv: fixed hash functions type to uint32_t instead of int

There are two reasons for this fix:
- the result of choose_orig() and vis_choose() is an index and therefore it can't
  be negative. Hence it is correct to make the return type unsigned too.

- sizeof(int) may not be the same on ALL the architectures. Since we plan to use
  choose_orig() as DHT hash function, we need to guarantee that, given the same
  argument, the result is the same. Then it is correct to explicitly express
  the size of the return type (and the second argument). Since the expected
  length is currently 4, uint32_t is the most convenient choice.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Sven Eckelmann <sven@narfation.org>

1 files changed, 8 insertions, 5 deletions

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 0e5b77255d99..0bc2045a2f2e 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -164,7 +164,7 @@ void originator_free(struct bat_priv *bat_priv)
         struct hlist_head *head;
         spinlock_t *list_lock; /* spinlock to protect write access */
         struct orig_node *orig_node;
-        int i;
+        uint32_t i;
 
         if (!hash)
                 return;
@@ -350,7 +350,7 @@ static void _purge_orig(struct bat_priv *bat_priv)
         struct hlist_head *head;
         spinlock_t *list_lock; /* spinlock to protect write access */
         struct orig_node *orig_node;
-        int i;
+        uint32_t i;
 
         if (!hash)
                 return;
@@ -413,7 +413,8 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
         int batman_count = 0;
         int last_seen_secs;
         int last_seen_msecs;
-        int i, ret = 0;
+        uint32_t i;
+        int ret = 0;
 
         primary_if = primary_if_get_selected(bat_priv);
 
@@ -519,7 +520,8 @@ int orig_hash_add_if(struct hard_iface *hard_iface, int max_if_num)
         struct hlist_node *node;
         struct hlist_head *head;
         struct orig_node *orig_node;
-        int i, ret;
+        uint32_t i;
+        int ret;
 
         /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
          * if_num */
@@ -601,7 +603,8 @@ int orig_hash_del_if(struct hard_iface *hard_iface, int max_if_num)
         struct hlist_head *head;
         struct hard_iface *hard_iface_tmp;
         struct orig_node *orig_node;
-        int i, ret;
+        uint32_t i;
+        int ret;
 
         /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
          * if_num */