[PATCH 2/4] crypto: hisilicon - Fix using plain integer as NULL pointer

[Shukun Tan]

This patch fix sparse warning:
zip_crypto.c:425:26: warning: Using plain integer as NULL pointer

Replaces assignment of 0 to pointer with NULL assignment.

Signed-off-by: Shukun Tan <tanshuk...@huawei.com>
Signed-off-by: Zhou Wang <wangzh...@hisilicon.com>
---
 drivers/crypto/hisilicon/zip/zip_crypto.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/hisilicon/zip/zip_crypto.c 
b/drivers/crypto/hisilicon/zip/zip_crypto.c
index 9d31b80..795428c 100644
--- a/drivers/crypto/hisilicon/zip/zip_crypto.c
+++ b/drivers/crypto/hisilicon/zip/zip_crypto.c
@@ -42,7 +42,7 @@ enum hisi_zip_alg_type {
 
 #define TO_HEAD(req_type)                                              \
        (((req_type) == HZIP_ALG_TYPE_ZLIB) ? zlib_head :               \
-        ((req_type) == HZIP_ALG_TYPE_GZIP) ? gzip_head : 0)            \
+        ((req_type) == HZIP_ALG_TYPE_GZIP) ? gzip_head : NULL)         \
 
 struct hisi_zip_req {
        struct acomp_req *req;
-- 
2.7.4