From: Jean Delvare <jdelvare@suse.de>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Len Brown <lenb@kernel.org>,
linux-acpi@vger.kernel.org,
Wim Van Sebroeck <wim@linux-watchdog.org>,
Guenter Roeck <linux@roeck-us.net>,
linux-watchdog@vger.kernel.org,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Tom Abraham <tabraham@suse.com>
Subject: Forcing non-ACPI watchdog driver
Date: Wed, 05 Feb 2020 16:05:29 +0100 [thread overview]
Message-ID: <1580915129.23547.3.camel@suse.de> (raw)
Hi all,
Is there a way to prevent the ACPI WDAT watchdog interface from being
used and force the use of a native watchdog driver instead?
I have a customer who reports a regression on kernel upgrade. Old
kernel (v4.4) uses iTCO_wdt and watchdog works, new kernel (v4.12) uses
wdat_wdt and watchdog doesn't work (instant reboot when opening the
device). While I'm going to look for fixes to backport, I think it
would be pretty convenient to have a way to just revert to the working
driver until the new driver is fixed somehow. But I can't see any way
to do that at the moment, short of disabling ACPI completely, which is
definitely too extreme to be considered.
Am I missing something?
Thanks,
--
Jean Delvare
SUSE L3 Support
next reply other threads:[~2020-02-05 15:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-05 15:05 Jean Delvare [this message]
2020-02-05 15:24 ` Forcing non-ACPI watchdog driver Mika Westerberg
2020-02-05 16:30 ` Guenter Roeck
2020-02-05 16:38 ` Mika Westerberg
2020-02-06 14:45 ` Jean Delvare
2020-02-06 14:56 ` Mika Westerberg
2020-02-06 15:50 ` Rafael J. Wysocki
2020-02-06 16:00 ` Rafael J. Wysocki
2020-02-06 19:14 ` Mika Westerberg
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