| commit | 51718d505589b59a4bb4dc2a6de5ae2402972a17 | |
| author | Zhao Yakui <yakui.zhao@intel.com> | |
| Fri, 24 Aug 2007 08:18:16 +0000 (24 16:18 +0800) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Wed, 26 Sep 2007 17:54:38 +0000 (26 10:54 -0700) | ||
| tree | ed3e87dded80de5f86c719b932933ce4dc80aeb6 | treesnapshot (tar.gz zip) |
| parent | 0e22438a5adfdf32b3bb1c75c81c01a29fba9770 | commitdiff |
ACPI: Validate XSDT, use RSDT if XSDT fails
commit 9f3119b70cf189530f1b46a006a052e171a1622f in mainline.
ACPI 1.0 used an RSDT with 32-bit physical addresses.
ACPI 2.0 adds an XSDT with 32-bit physical addresses.
An ACPI 2.0 aware OS is supposed to use the XSDT
(when present) instead of the RSDT.
However, several systems have failed because the XSDT
contains NULL entries -- while it is missing pointers
to needed tables, such as SSDTs.
When we find an XSDT with NULL entries, discard it
and use the ACPI 1.0 RSDT instead.
http://bugzilla.kernel.org/show_bug.cgi?id=8630
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Cc: Vincet Fortier <Vincent.Fortier1@EC.GC.CA>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 9f3119b70cf189530f1b46a006a052e171a1622f in mainline.
ACPI 1.0 used an RSDT with 32-bit physical addresses.
ACPI 2.0 adds an XSDT with 32-bit physical addresses.
An ACPI 2.0 aware OS is supposed to use the XSDT
(when present) instead of the RSDT.
However, several systems have failed because the XSDT
contains NULL entries -- while it is missing pointers
to needed tables, such as SSDTs.
When we find an XSDT with NULL entries, discard it
and use the ACPI 1.0 RSDT instead.
http://bugzilla.kernel.org/show_bug.cgi?id=8630
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Cc: Vincet Fortier <Vincent.Fortier1@EC.GC.CA>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/acpi/tables/tbutils.c | diffblobblamehistory |