From: Ben Dooks <ben-linux@fluff.org>
Date: Wed, 6 Sep 2006 11:24:35 +0000 (+0100)
Subject: [WATCHDOG] s3c24XX nowayout
X-Git-Tag: v3.12-rc1~33142^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=25ff3780d4cd46804e22192a728cfb6b33c84d1b;p=kernel%2Fkernel-generic.git

[WATCHDOG] s3c24XX nowayout

If the driver is not configured for `no way out`,
then the open method should not automatically allow
the setting of allow_close to CLOSE_STATE_ALLOW.

The setting of allow_close nullifies the use of
the magic close via the write path. It means that
in the default state, the watchdog will shut-down
even if the magic close has not been issued.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---

diff --git a/drivers/char/watchdog/s3c2410_wdt.c b/drivers/char/watchdog/s3c2410_wdt.c
index be978e8..a49f1f2 100644
--- a/drivers/char/watchdog/s3c2410_wdt.c
+++ b/drivers/char/watchdog/s3c2410_wdt.c
@@ -62,7 +62,7 @@
 #define CONFIG_S3C2410_WATCHDOG_ATBOOT		(0)
 #define CONFIG_S3C2410_WATCHDOG_DEFAULT_TIME	(15)
 
-static int nowayout = WATCHDOG_NOWAYOUT;
+static int nowayout	= WATCHDOG_NOWAYOUT;
 static int tmr_margin	= CONFIG_S3C2410_WATCHDOG_DEFAULT_TIME;
 static int tmr_atboot	= CONFIG_S3C2410_WATCHDOG_ATBOOT;
 static int soft_noboot	= 0;
@@ -213,11 +213,10 @@ static int s3c2410wdt_open(struct inode *inode, struct file *file)
 	if(down_trylock(&open_lock))
 		return -EBUSY;
 
-	if (nowayout) {
+	if (nowayout)
 		__module_get(THIS_MODULE);
-	} else {
-		allow_close = CLOSE_STATE_ALLOW;
-	}
+
+	allow_close = CLOSE_STATE_NOT;
 
 	/* start the timer */
 	s3c2410wdt_start();
@@ -230,6 +229,7 @@ static int s3c2410wdt_release(struct inode *inode, struct file *file)
 	 *	Shut off the timer.
 	 * 	Lock it in if it's a module and we set nowayout
 	 */
+
 	if (allow_close == CLOSE_STATE_ALLOW) {
 		s3c2410wdt_stop();
 	} else {