From: Guenter Roeck <linux@roeck-us.net>
To: Vignesh Raman <vignesh.raman.in@gmail.com>
Cc: linux-watchdog@vger.kernel.org,
andriy.shevchenko@linux.intel.com,
rajneesh.bhardwaj@linux.intel.com,
mika.westerberg@linux.intel.com
Subject: Re: watchdog: iTCO_wdt: failed to load
Date: Thu, 25 Jul 2019 06:10:33 -0700 [thread overview]
Message-ID: <e1f4f561-ba33-b9ce-66db-c67cb260ecdf@roeck-us.net> (raw)
In-Reply-To: <CAH3OF53G3bHfxpGVLHKns9k-QBAUroiqvkcdQ4d+gOmsLvaN6w@mail.gmail.com>
On 7/24/19 10:12 PM, Vignesh Raman wrote:
> Hi Guenter,
>
> On Wed, Jul 24, 2019 at 6:57 PM Guenter Roeck <linux@roeck-us.net> wrote:
>>
>> What is the output of /proc/iomem, what PCI devices does it have, and what are
>> the ACPI devices ? Reason for asking is that I don't immediately see the ACPI
>> or PCI devices associated with above patch in your dmesg. If not, the patch
>> might actually cause the watchdog in your system not to work.
>
> /proc/iomem - http://paste.debian.net/1092996/
Here is your problem:
00100000-5e431017 : System RAM
00c5fffc-00c5ffff : iTCO_wdt
The address range requested by the watchdog is marked by the BIOS as system memory.
The patch referenced below tries to address a different problem and does not apply
to your system.
Guenter
> PCI devices - http://paste.debian.net/1092997/
> ACPI devices - http://paste.debian.net/1093003/
>
>> Also, did this ever work in your system ? If it did work, did the failure
>> start after a kernel update or after a BIOS update ?
>
> The hardware watchdog has never worked in the system. Without the
> patch https://lore.kernel.org/patchwork/patch/770990/ the probe error
> is seen,
> [ 3.828440] iTCO_wdt iTCO_wdt: can't request region for resource
> [mem 0x00c5fffc-0x00c5ffff]
> [ 3.828803] iTCO_wdt: probe of iTCO_wdt failed with error -16
>
> With the patch the module loads fine, but the hardware watchdog does not work.
>
> Regards,
> Vignesh
>
next prev parent reply other threads:[~2019-07-25 13:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-24 7:34 watchdog: iTCO_wdt: failed to load Vignesh Raman
2019-07-24 9:34 ` Guenter Roeck
2019-07-24 13:27 ` Guenter Roeck
2019-07-25 5:12 ` Vignesh Raman
2019-07-25 13:10 ` Guenter Roeck [this message]
2019-08-01 4:18 ` Vignesh Raman
2019-08-01 4:43 ` Guenter Roeck
2019-07-24 16:06 ` Andy Shevchenko
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