ACPI, APEI, EINJ, cleanup 0 vs NULL confusion

This function is returning pointers.  Sparse complains here:
drivers/acpi/apei/einj.c:262:32: warning:
	Using plain integer as NULL pointer

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index bb20b03ddc39..c89b0e5a2293 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -259,15 +259,15 @@ static void *einj_get_parameter_address(void)
 
                 v4param = ioremap(paddrv4, sizeof(*v4param));
                 if (!v4param)
-                        return 0;
+                        return NULL;
                 if (readq(&v4param->reserved1) || readq(&v4param->reserved2)) {
                         iounmap(v4param);
-                        return 0;
+                        return NULL;
                 }
                 return v4param;
         }
 
-        return 0;
+        return NULL;
 }
 
 /* do sanity check to trigger table */