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watchdog: w83627hf_wdt: Add early_disable module parameter

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Add early_disable module parameter to match functionality previously
available in the w83697hf_wdt driver.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Guenter Roeck 2014-04-05 11:27:36 -07:00 committed by Wim Van Sebroeck
parent ebc5e33607
commit be281588d0
1 changed files with 12 additions and 3 deletions
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15
drivers/watchdog/w83627hf_wdt.c
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@ -64,6 +64,10 @@ MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static int early_disable;
module_param(early_disable, int, 0);
MODULE_PARM_DESC(early_disable, "Disable watchdog at boot time (default=0)");
/*
* Kernel methods.
*/
@ -208,9 +212,14 @@ static int w83627hf_init(struct watchdog_device *wdog, enum chips chip)
t = superio_inb(cr_wdt_timeout);
if (t != 0) {
pr_info("Watchdog already running. Resetting timeout to %d sec\n",
wdog->timeout);
superio_outb(cr_wdt_timeout, wdog->timeout);
if (early_disable) {
pr_warn("Stopping previously enabled watchdog until userland kicks in\n");
superio_outb(cr_wdt_timeout, 0);
} else {
pr_info("Watchdog already running. Resetting timeout to %d sec\n",
wdog->timeout);
superio_outb(cr_wdt_timeout, wdog->timeout);
}
}
/* set second mode & disable keyboard turning off watchdog */