[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>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/inet_lro.c b/net/ipv4/inet_lro.c
index 20bc593bb963..4545b64e2815 100644
--- a/net/ipv4/inet_lro.c
+++ b/net/ipv4/inet_lro.c
@@ -482,7 +482,7 @@ static struct sk_buff *__lro_proc_segment(struct net_lro_mgr *lro_mgr,
 
                 lro_init_desc(lro_desc, skb, iph, tcph, 0, NULL);
                 LRO_INC_STATS(lro_mgr, aggregated);
-                return 0;
+                return NULL;
         }
 
         if (lro_desc->tcp_next_seq != ntohl(tcph->seq))