linux-kernel - [PATCH] tty: use NULL for ptrs

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Date:	Tue, 13 Feb 2007 16:11:32 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	akpm <akpm@...l.org>
Subject: [PATCH] tty: use NULL for ptrs

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

Fix sparse warning in tty_io:
drivers/char/tty_io.c:1536:34: warning: Using plain integer as NULL pointer

Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
---
 drivers/char/tty_io.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2.6.20-git9.orig/drivers/char/tty_io.c
+++ linux-2.6.20-git9/drivers/char/tty_io.c
@@ -1533,7 +1533,7 @@ void disassociate_ctty(int on_exit)
 
 	spin_lock_irq(&current->sighand->siglock);
 	tty_pgrp = current->signal->tty_old_pgrp;
-	current->signal->tty_old_pgrp = 0;
+	current->signal->tty_old_pgrp = NULL;
 	spin_unlock_irq(&current->sighand->siglock);
 	put_pid(tty_pgrp);
 
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