From: Randy Dunlap <randy.dunlap@oracle.com>

Use NULL instead of 0 for pointer:
arch/x86_64/kernel/vsyscall.c:183:21: warning: Using plain integer as NULL pointer

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/x86_64/kernel/vsyscall.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN arch/x86_64/kernel/vsyscall.c~x86_64-use-null-for-pointer arch/x86_64/kernel/vsyscall.c
--- a/arch/x86_64/kernel/vsyscall.c~x86_64-use-null-for-pointer
+++ a/arch/x86_64/kernel/vsyscall.c
@@ -180,7 +180,7 @@ time_t __vsyscall(1) vtime(time_t *t)
 	if (unlikely(!__vsyscall_gtod_data.sysctl_enabled))
 		return time_syscall(t);
 
-	vgettimeofday(&tv, 0);
+	vgettimeofday(&tv, NULL);
 	result = tv.tv_sec;
 	if (t)
 		*t = result;
_