ACPICA: FADT: Favor 32-bit register addresses for compatibility

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Use the 32-bit register addresses whenever they are non-zero. This
means that the 32-bit addresses are favored over the 64-bit
(GAS) addresses. The 64-bit addresses are only used if the 32-bit
addresses are zero. This change provides compatibility with all
versions of Windows. The worst case that this solves is when both
the 32-bit and 64-bit addresses are non-zero, but only the 32-bit
addresses are actually valid. This appears to happen in some
BIOSes because in this case, Windows uses the 32-bit addresses.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

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Bob Moore 2009-03-19 10:12:13 +08:00 • committed by Len Brown

parent f28ad2c3da

commit 31fbc073a3

1 changed files with 51 additions and 35 deletions

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drivers/acpi/acpica/tbfadt.c

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