diff options
Diffstat (limited to 'drivers/watchdog/watchdog_core.c')
-rw-r--r-- | drivers/watchdog/watchdog_core.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c index 7c3ba58..6abb83c 100644 --- a/drivers/watchdog/watchdog_core.c +++ b/drivers/watchdog/watchdog_core.c @@ -88,7 +88,7 @@ static void watchdog_check_min_max_timeout(struct watchdog_device *wdd) * Check that we have valid min and max timeout values, if * not reset them both to 0 (=not used or unknown) */ - if (wdd->min_timeout > wdd->max_timeout) { + if (!wdd->max_hw_heartbeat_ms && wdd->min_timeout > wdd->max_timeout) { pr_info("Invalid min and max timeout values, resetting to 0!\n"); wdd->min_timeout = 0; wdd->max_timeout = 0; @@ -329,6 +329,43 @@ void watchdog_unregister_device(struct watchdog_device *wdd) EXPORT_SYMBOL_GPL(watchdog_unregister_device); +static void devm_watchdog_unregister_device(struct device *dev, void *res) +{ + watchdog_unregister_device(*(struct watchdog_device **)res); +} + +/** + * devm_watchdog_register_device() - resource managed watchdog_register_device() + * @dev: device that is registering this watchdog device + * @wdd: watchdog device + * + * Managed watchdog_register_device(). For watchdog device registered by this + * function, watchdog_unregister_device() is automatically called on driver + * detach. See watchdog_register_device() for more information. + */ +int devm_watchdog_register_device(struct device *dev, + struct watchdog_device *wdd) +{ + struct watchdog_device **rcwdd; + int ret; + + rcwdd = devres_alloc(devm_watchdog_unregister_device, sizeof(*wdd), + GFP_KERNEL); + if (!rcwdd) + return -ENOMEM; + + ret = watchdog_register_device(wdd); + if (!ret) { + *rcwdd = wdd; + devres_add(dev, rcwdd); + } else { + devres_free(rcwdd); + } + + return ret; +} +EXPORT_SYMBOL_GPL(devm_watchdog_register_device); + static int __init watchdog_deferred_registration(void) { mutex_lock(&wtd_deferred_reg_mutex); |