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watchdog: mei_wdt: request stop on reboot to prevent false positive event
Systemd on reboot enables shutdown watchdog that leaves the watchdog device open to ensure that even if power down process get stuck the platform reboots nonetheless. The iamt_wdt is an alarm-only watchdog and can't reboot system, but the FW will generate an alarm event reboot was completed in time, as the watchdog is not automatically disabled during power cycle. So we should request stop watchdog on reboot to eliminate wrong alarm from the FW. Cc: <stable@vger.kernel.org> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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@ -389,6 +389,8 @@ static int mei_wdt_register(struct mei_wdt *wdt)
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wdt->wdd.max_timeout = MEI_WDT_MAX_TIMEOUT;
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watchdog_set_drvdata(&wdt->wdd, wdt);
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watchdog_stop_on_reboot(&wdt->wdd);
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ret = watchdog_register_device(&wdt->wdd);
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if (ret) {
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dev_err(dev, "unable to register watchdog device = %d.\n", ret);
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