On 12/10/24 02:45, Ming Yu wrote:

This driver supports Watchdog timer functionality for NCT6694 MFD
device based on USB interface.

Signed-off-by: Ming Yu <tmyu0@nuvoton.com>
---

...

+static int nct6694_wdt_probe(struct platform_device *pdev)
+{

...

+	wdev->timeout = timeout;
+	wdev->pretimeout = pretimeout;
+	if (timeout < pretimeout) {
+		dev_warn(data->dev, "pretimeout < timeout. Setting to zero\n");
+		wdev->pretimeout = 0;
+	}
+
+	wdev->min_timeout = 1;
+	wdev->max_timeout = 255;
+
+	mutex_init(&data->lock);
+
+	platform_set_drvdata(pdev, data);
+
+	/* Register watchdog timer device to WDT framework */
+	watchdog_set_drvdata(&data->wdev, data);
+	watchdog_init_timeout(&data->wdev, timeout, dev);

This is pointless since timeout is pre-initialized with a value != 0.
That means a value provided through devicetree will never be used
unless the user sets timeout=0 as module parameter. But then the above
check for pretimeout is useless.

Guenter