datapath: Use NULL instead of 0 in alloc_buckets().

0 and NULL are the same but NULL has clearer semantics.  This has
no functional change.

Found with sparse.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>

diff --git a/datapath/table.c b/datapath/table.c
index 6111809..86236e9 100644 (file)
--- a/datapath/table.c
+++ b/datapath/table.c
@@ -78,7 +78,7 @@ static struct tbl_bucket ***alloc_buckets(unsigned int n_buckets)
        for (i = 0; i < n_buckets >> TBL_L1_BITS; i++) {
                l1[i] = (struct tbl_bucket **)get_zeroed_page(GFP_KERNEL);
                if (!l1[i]) {
-                       free_buckets(l1, i << TBL_L1_BITS, 0);
+                       free_buckets(l1, i << TBL_L1_BITS, NULL);
                        return NULL;
                }
        }