Commit 2eb1bdba authored Feb 26, 2006 by Andi Kleen Committed by Linus Torvalds Feb 26, 2006

[PATCH] x86_64: Disable ACPI blacklist by year for now on x86-64



ACPI is initialized very early on x86-64, before the DMI code is
initialized.  This means it would often discover a 0 year and then turn
off ACPI because it thought the BIOS was too old.  Some systems don't
boot without ACPI so this was a problem.

I have a full fix by adding new very early DMI detection, but it needs
more testing before it can be merged.  For 2.6.16 let's just turn the
check off.  It never made much sense anyways because there are no x86-64
systems older than 2002 or so and they generally all have working ACPI.

Cc: len.brown@intel.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 1f992153

drivers/acpi/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -247,7 +247,7 @@ config ACPI_CUSTOM_DSDT_FILE
		Enter the full path name to the file wich includes the AmlCode declaration.

		config ACPI_BLACKLIST_YEAR
		int "Disable ACPI for systems before Jan 1st this year" if X86
		int "Disable ACPI for systems before Jan 1st this year" if X86_32
		default 0
		help
		enter a 4-digit year, eg. 2001 to disable ACPI by default

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