From d0684c8a9354953efdea214b437445c00743cf49 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sun, 28 Feb 2016 13:12:17 -0800 Subject: watchdog: Make stop function optional Not all hardware watchdogs can be stopped. The driver for such watchdogs would typically only set the WATCHDOG_HW_RUNNING flag in its stop function. Make the stop function optional and set WATCHDOG_HW_RUNNING in the watchdog core if it is not provided. Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/watchdog_dev.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/watchdog/watchdog_dev.c') diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 5d3a9fa4856e..5163c3eb3428 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -246,7 +246,11 @@ static int watchdog_stop(struct watchdog_device *wdd) return -EBUSY; } - err = wdd->ops->stop(wdd); + if (wdd->ops->stop) + err = wdd->ops->stop(wdd); + else + set_bit(WDOG_HW_RUNNING, &wdd->status); + if (err == 0) { clear_bit(WDOG_ACTIVE, &wdd->status); watchdog_update_worker(wdd); -- cgit v1.2.3