[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 (file)
--- 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 {