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| author | Guenter Roeck <linux@roeck-us.net> | 2014-04-05 20:27:36 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2014-06-10 21:46:07 +0200 |
| commit | be281588d0bb21ccb07b1747939e0c919c2203fc (patch) | |
| tree | c574c84b8b90d7a41c3468e7d56b69fa474d69d6 /drivers/watchdog/w83627hf_wdt.c | |
| parent | ARM: mvebu: Add A375/A380 watchdog binding documentation (diff) | |
| download | linux-be281588d0bb21ccb07b1747939e0c919c2203fc.tar.xz linux-be281588d0bb21ccb07b1747939e0c919c2203fc.zip | |
watchdog: w83627hf_wdt: Add early_disable module parameter
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>
Diffstat (limited to 'drivers/watchdog/w83627hf_wdt.c')
| -rw-r--r-- | drivers/watchdog/w83627hf_wdt.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c index b1da0c18fd1a..7165704a3e33 100644 --- a/drivers/watchdog/w83627hf_wdt.c +++ b/drivers/watchdog/w83627hf_wdt.c @@ -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 */ |