diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/watchdog/watchdog_dev.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 9f5550e16ab..2c0289deaad 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -190,6 +190,26 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd, return -EOPNOTSUPP; watchdog_ping(wdd); return 0; + case WDIOC_SETTIMEOUT: + if ((wdd->ops->set_timeout == NULL) || + !(wdd->info->options & WDIOF_SETTIMEOUT)) + return -EOPNOTSUPP; + if (get_user(val, p)) + return -EFAULT; + err = wdd->ops->set_timeout(wdd, val); + if (err < 0) + return err; + wdd->timeout = val; + /* If the watchdog is active then we send a keepalive ping + * to make sure that the watchdog keep's running (and if + * possible that it takes the new timeout) */ + watchdog_ping(wdd); + /* Fall */ + case WDIOC_GETTIMEOUT: + /* timeout == 0 means that we don't know the timeout */ + if (wdd->timeout == 0) + return -EOPNOTSUPP; + return put_user(wdd->timeout, p); default: return -ENOTTY; } |