diff options
Diffstat (limited to 'drivers/watchdog/wd_core.c')
| -rw-r--r-- | drivers/watchdog/wd_core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/watchdog/wd_core.c b/drivers/watchdog/wd_core.c index de1f4c7327..6f9c2707a7 100644 --- a/drivers/watchdog/wd_core.c +++ b/drivers/watchdog/wd_core.c @@ -59,6 +59,9 @@ int watchdog_register(struct watchdog *wd) if (!wd->priority) wd->priority = WATCHDOG_DEFAULT_PRIORITY; + dev_add_param_uint32_ro(&wd->dev, "timeout_max", + &wd->timeout_max, "%u"); + list_add_tail(&wd->list, &watchdog_list); pr_debug("registering watchdog %s with priority %d\n", watchdog_name(wd), @@ -105,6 +108,9 @@ int watchdog_set_timeout(unsigned timeout) if (!wd) return -ENODEV; + if (timeout > wd->timeout_max) + return -EINVAL; + pr_debug("setting timeout on %s to %ds\n", watchdog_name(wd), timeout); return wd->set_timeout(wd, timeout); |