Hi Guenter, On Wed, Jul 24, 2019 at 6:57 PM Guenter Roeck <linux@xxxxxxxxxxxx> 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/ 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