[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>

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 9dc2fbe6efa77db675fd9a6139833d522ec45f42..33e2ca847a261434faf3ca8b0dca05883f80e256 100644 (file)
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -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