Re: [PATCH] watchdog: gpio: add support for nowayout option

[Guenter Roeck]

On 5/28/19 2:09 AM, Mans Rullgard wrote:

Add support for the nowayout option in the gpio watchdog driver.

Signed-off-by: Mans Rullgard <m...@mansr.com>

Reviewed-by: Guenter Roeck <li...@roeck-us.net>

---
  drivers/watchdog/gpio_wdt.c | 7 +++++++
  1 file changed, 7 insertions(+)

diff --git a/drivers/watchdog/gpio_wdt.c b/drivers/watchdog/gpio_wdt.c
index ea77cae03c9d..63792bb70213 100644
--- a/drivers/watchdog/gpio_wdt.c
+++ b/drivers/watchdog/gpio_wdt.c
@@ -17,6 +17,12 @@
  #include <linux/platform_device.h>
  #include <linux/watchdog.h>

+static bool nowayout = WATCHDOG_NOWAYOUT;

+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout,
+               "Watchdog cannot be stopped once started (default="
+                               __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
  #define SOFT_TIMEOUT_MIN      1
  #define SOFT_TIMEOUT_DEF      60

@@ -155,6 +161,7 @@ static int gpio_wdt_probe(struct platform_device *pdev)

        priv->wdd.timeout    = SOFT_TIMEOUT_DEF;

watchdog_init_timeout(&priv->wdd, 0, &pdev->dev);

+       watchdog_set_nowayout(&priv->wdd, nowayout);

watchdog_stop_on_reboot(&priv->wdd);