linux-kernel - [PATCH 04/68] 0 -> NULL, for arch/blackfin

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Date:	Fri, 27 Jul 2007 11:44:18 +0200 (MEST)
From:	Yoann Padioleau <padator@...adoo.fr>
To:	kernel-janitors@...r.kernel.org
Cc:	aubrey.li@...log.com, bryan.wu@...log.com,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: [PATCH 04/68] 0 -> NULL, for arch/blackfin


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@...adoo.fr>
Cc: aubrey.li@...log.com
Cc: bryan.wu@...log.com
Cc: akpm@...ux-foundation.org
---

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

diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 3909f5b..691c66d 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -546,7 +546,7 @@ void dump_bfin_regs(struct pt_regs *fp, 
 	}
 
 	printk(KERN_EMERG "return address: [0x%p]; contents of:", retaddr);
-	if (retaddr != 0 && retaddr <= (void *)physical_mem_end
+	if (retaddr != NULL && retaddr <= (void *)physical_mem_end
 #if L1_CODE_LENGTH != 0
 	    /* FIXME: Copy the code out of L1 Instruction SRAM through dma
 	       memcpy.  */

-
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