[PATCH 11/68] 0 -> NULL, for arch/parisc

[Yoann Padioleau <padator@wanadoo.fr>]

When comparing a pointer, it's clearer to compare it to NULL than to 0.

Here is an excerpt of the semantic patch: 

@@
expression *E;
@@

  E ==
- 0
+ NULL

@@
expression *E;
@@

  E !=
- 0
+ NULL

Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Cc: matthew@wil.cx
Cc: grundler@parisc-linux.org
Cc: kyle@parisc-linux.org
Cc: parisc-linux@parisc-linux.org
Cc: akpm@linux-foundation.org
---

 smp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 04c7e1d..16fccbe 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -333,7 +333,7 @@ smp_call_function (void (*func) (void *i
 
 	if (retry) {
 		spin_lock (&lock);
-		while (smp_call_function_data != 0)
+		while (smp_call_function_data != NULL)
 			barrier();
 	}
 	else {