[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, 2 insertions, 2 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index d99864662582..13a1bc5d3bfd 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -780,7 +780,7 @@ static int __dev_alloc_name(struct net *net, const char *name, char *buf)
         int i = 0;
         const char *p;
         const int max_netdevices = 8*PAGE_SIZE;
-        long *inuse;
+        unsigned long *inuse;
         struct net_device *d;
 
         p = strnchr(name, IFNAMSIZ-1, '%');
@@ -794,7 +794,7 @@ static int __dev_alloc_name(struct net *net, const char *name, char *buf)
                         return -EINVAL;
 
                 /* Use one page as a bit array of possible slots */
-                inuse = (long *) get_zeroed_page(GFP_ATOMIC);
+                inuse = (unsigned long *) get_zeroed_page(GFP_ATOMIC);
                 if (!inuse)
                         return -ENOMEM;