This patch fixes the warning generated by sparse: "Using plain integer
as NULL pointer" by replacing the offending 0s with NULL.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
---
KernelVersion: linux-next-20101207

 drivers/staging/zram/xvmalloc.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/zram/xvmalloc.c b/drivers/staging/zram/xvmalloc.c
index 3fdbb8a..b644067 100644
--- a/drivers/staging/zram/xvmalloc.c
+++ b/drivers/staging/zram/xvmalloc.c
@@ -187,7 +187,7 @@ static void insert_block(struct xv_pool *pool, struct page *page, u32 offset,
 	slindex = get_index_for_insert(block->size);
 	flindex = slindex / BITS_PER_LONG;
 
-	block->link.prev_page = 0;
+	block->link.prev_page = NULL;
 	block->link.prev_offset = 0;
 	block->link.next_page = pool->freelist[slindex].page;
 	block->link.next_offset = pool->freelist[slindex].offset;
@@ -217,7 +217,7 @@ static void remove_block_head(struct xv_pool *pool,
 
 	pool->freelist[slindex].page = block->link.next_page;
 	pool->freelist[slindex].offset = block->link.next_offset;
-	block->link.prev_page = 0;
+	block->link.prev_page = NULL;
 	block->link.prev_offset = 0;
 
 	if (!pool->freelist[slindex].page) {
@@ -232,7 +232,7 @@ static void remove_block_head(struct xv_pool *pool,
 		 */
 		tmpblock = get_ptr_atomic(pool->freelist[slindex].page,
 				pool->freelist[slindex].offset, KM_USER1);
-		tmpblock->link.prev_page = 0;
+		tmpblock->link.prev_page = NULL;
 		tmpblock->link.prev_offset = 0;
 		put_ptr_atomic(tmpblock, KM_USER1);
 	}
-- 
1.7.2.2

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