linux-kernel - [PATCH 20/68] 0 -> NULL, for arch/xtensa

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Fri, 27 Jul 2007 11:47:47 +0200 (MEST)
From:	Yoann Padioleau <padator@...adoo.fr>
To:	kernel-janitors@...r.kernel.org
Cc:	chris@...kel.net, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 20/68] 0 -> NULL, for arch/xtensa


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: chris@...kel.net
Cc: akpm@...ux-foundation.org
---

 kernel/pci.c           |    2 +-
 kernel/traps.c         |    2 +-
 platform-iss/console.c |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 77deae5..1102816 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -306,7 +306,7 @@ __pci_mmap_make_offset(struct pci_dev *d
 	unsigned long io_offset = 0;
 	int i, res_bit;
 
-	if (pci_ctrl == 0)
+	if (pci_ctrl == NULL)
 		return -EINVAL;		/* should never happen */
 
 	/* If memory, add on the PCI bridge address offset */
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index c5e62f9..eb21c7c 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -419,7 +419,7 @@ void show_stack(struct task_struct *task
 	int i = 0;
 	unsigned long *stack;
 
-	if (sp == 0)
+	if (sp == NULL)
 		__asm__ __volatile__ ("mov %0, a1\n" : "=a"(sp));
 
  	stack = sp;
diff --git a/arch/xtensa/platform-iss/console.c b/arch/xtensa/platform-iss/console.c
index 2f4f20f..ad8d65e 100644
--- a/arch/xtensa/platform-iss/console.c
+++ b/arch/xtensa/platform-iss/console.c
@@ -265,7 +265,7 @@ static void iss_console_write(struct con
 {
 	int len = strlen(s);
 
-	if (s != 0 && *s != 0)
+	if (s != NULL && *s != 0)
 		__simc (SYS_write, 1, (unsigned long)s,
 			count < len ? count : len,0,0);
 }

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/