[NET]: sparse warning fixes
Fix a bunch of sparse warnings. Mostly about 0 used as
NULL pointer, and shadowed variable declarations.
One notable case was that hash size should have been unsigned.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 2a9b363..307e1f1 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -246,7 +246,7 @@
static struct rt_hash_bucket *rt_hash_table;
static unsigned rt_hash_mask;
-static int rt_hash_log;
+static unsigned int rt_hash_log;
static unsigned int rt_hash_rnd;
static DEFINE_PER_CPU(struct rt_cache_stat, rt_cache_stat);
@@ -593,7 +593,7 @@
i = (i + 1) & rt_hash_mask;
rthp = &rt_hash_table[i].chain;
- if (*rthp == 0)
+ if (*rthp == NULL)
continue;
spin_lock_bh(rt_hash_lock_addr(i));
while ((rth = *rthp) != NULL) {