[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, 3 insertions, 3 deletions

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index b2b3053dfef7..f51f20e487c8 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -659,7 +659,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
                         break;
                 }
                 msf = kmalloc(optlen, GFP_KERNEL);
-                if (msf == 0) {
+                if (!msf) {
                         err = -ENOBUFS;
                         break;
                 }
@@ -816,7 +816,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
                         break;
                 }
                 gsf = kmalloc(optlen,GFP_KERNEL);
-                if (gsf == 0) {
+                if (!gsf) {
                         err = -ENOBUFS;
                         break;
                 }
@@ -836,7 +836,7 @@ static int do_ip_setsockopt(struct sock *sk, int level,
                 }
                 msize = IP_MSFILTER_SIZE(gsf->gf_numsrc);
                 msf = kmalloc(msize,GFP_KERNEL);
-                if (msf == 0) {
+                if (!msf) {
                         err = -ENOBUFS;
                         goto mc_msf_out;
                 }