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ACPI: watchdog: Allow disabling WDAT at boot

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[ Upstream commit 3f9e12e0df012c4a9a7fd7eb0d3ae69b459d6b2c ]

In case the WDAT interface is broken, give the user an option to
ignore it to let a native driver bind to the watchdog device instead.

Signed-off-by: Jean Delvare <[email protected]>
Acked-by: Mika Westerberg <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Jean Delvare 2020-02-06 16:58:45 +01:00 • committed by Greg Kroah-Hartman
commit 20eed76927
2 changed files with 15 additions and 1 deletions
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4
Documentation/admin-guide/kernel-parameters.txt
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@ -136,6 +136,10 @@
dynamic table installation which will install SSDT
tables to /sys/firmware/acpi/tables/dynamic.
acpi_no_watchdog [HW,ACPI,WDT]
Ignore the ACPI-based watchdog interface (WDAT) and let
a native driver control the watchdog device instead.
acpi_rsdp= [ACPI,EFI,KEXEC]
Pass the RSDP address to the kernel, mostly used
on machines running EFI runtime service to boot the