Dear Guenter, Thank you for your comments, Guenter Roeck <linux@xxxxxxxxxxxx> 於 2024年12月10日 週二 下午11:22寫道: > > > +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. > Understood! I will drop it in v4. Best regards, Ming