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| author | Guenter Roeck | 2016-02-28 22:12:17 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck | 2016-03-16 21:11:16 +0100 |
| commit | d0684c8a9354953efdea214b437445c00743cf49 (patch) | |
| tree | 0442757196b7ee3e169846a4ef1fa13249870566 /drivers/watchdog/watchdog_core.c | |
| parent | watchdog: Introduce WDOG_HW_RUNNING flag (diff) | |
| download | kernel-qcow2-linux-d0684c8a9354953efdea214b437445c00743cf49.tar.gz kernel-qcow2-linux-d0684c8a9354953efdea214b437445c00743cf49.tar.xz kernel-qcow2-linux-d0684c8a9354953efdea214b437445c00743cf49.zip | |
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 <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/watchdog_core.c')
| -rw-r--r-- | drivers/watchdog/watchdog_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c index d9b3c9c023c4..c1658fe73d58 100644 --- a/drivers/watchdog/watchdog_core.c +++ b/drivers/watchdog/watchdog_core.c @@ -199,7 +199,7 @@ static int __watchdog_register_device(struct watchdog_device *wdd) return -EINVAL; /* Mandatory operations need to be supported */ - if (wdd->ops->start == NULL || wdd->ops->stop == NULL) + if (!wdd->ops->start || (!wdd->ops->stop && !wdd->max_hw_heartbeat_ms)) return -EINVAL; watchdog_check_min_max_timeout(wdd); |