diff options
| -rw-r--r-- | drivers/watchdog/gpio_wdt.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/drivers/watchdog/gpio_wdt.c b/drivers/watchdog/gpio_wdt.c index 57d30f1f55ab..5e16b0983e2a 100644 --- a/drivers/watchdog/gpio_wdt.c +++ b/drivers/watchdog/gpio_wdt.c @@ -50,12 +50,41 @@ static void gpio_wdt_disable(struct gpio_wdt_priv *priv) gpio_direction_input(priv->gpio); } +static void gpio_wdt_hwping(unsigned long data) +{ + struct watchdog_device *wdd = (struct watchdog_device *)data; + struct gpio_wdt_priv *priv = watchdog_get_drvdata(wdd); + + if (priv->armed && time_after(jiffies, priv->last_jiffies + + msecs_to_jiffies(wdd->timeout * 1000))) { + dev_crit(wdd->dev, "Timer expired. System will reboot soon!\n"); + return; + } + + /* Restart timer */ + mod_timer(&priv->timer, jiffies + priv->hw_margin); + + switch (priv->hw_algo) { + case HW_ALGO_TOGGLE: + /* Toggle output pin */ + priv->state = !priv->state; + gpio_set_value_cansleep(priv->gpio, priv->state); + break; + case HW_ALGO_LEVEL: + /* Pulse */ + gpio_set_value_cansleep(priv->gpio, !priv->active_low); + udelay(1); + gpio_set_value_cansleep(priv->gpio, priv->active_low); + break; + } +} + static void gpio_wdt_start_impl(struct gpio_wdt_priv *priv) { priv->state = priv->active_low; gpio_direction_output(priv->gpio, priv->state); priv->last_jiffies = jiffies; - mod_timer(&priv->timer, priv->last_jiffies + priv->hw_margin); + gpio_wdt_hwping((unsigned long)&priv->wdd); } static int gpio_wdt_start(struct watchdog_device *wdd) @@ -97,35 +126,6 @@ static int gpio_wdt_set_timeout(struct watchdog_device *wdd, unsigned int t) return gpio_wdt_ping(wdd); } -static void gpio_wdt_hwping(unsigned long data) -{ - struct watchdog_device *wdd = (struct watchdog_device *)data; - struct gpio_wdt_priv *priv = watchdog_get_drvdata(wdd); - - if (priv->armed && time_after(jiffies, priv->last_jiffies + - msecs_to_jiffies(wdd->timeout * 1000))) { - dev_crit(wdd->dev, "Timer expired. System will reboot soon!\n"); - return; - } - - /* Restart timer */ - mod_timer(&priv->timer, jiffies + priv->hw_margin); - - switch (priv->hw_algo) { - case HW_ALGO_TOGGLE: - /* Toggle output pin */ - priv->state = !priv->state; - gpio_set_value_cansleep(priv->gpio, priv->state); - break; - case HW_ALGO_LEVEL: - /* Pulse */ - gpio_set_value_cansleep(priv->gpio, !priv->active_low); - udelay(1); - gpio_set_value_cansleep(priv->gpio, priv->active_low); - break; - } -} - static int gpio_wdt_notify_sys(struct notifier_block *nb, unsigned long code, void *unused) { |