diff options
| author | Len Brown <len.brown@intel.com> | 2007-11-23 20:08:02 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-12-14 02:36:24 -0500 |
| commit | 239665a3bb0a2234980f918913add31bc536cfd1 (patch) | |
| tree | 260262706ce5223bf3d1cec0e8083ea42260f2fb /drivers/acpi/tables/Makefile | |
| parent | 2ffbb8377c7a0713baf6644e285adc27a5654582 (diff) | |
ACPI: tables: complete searching upon RSDP w/ bad checksum.
ACPI tables follow a tree structure in memory.
The root of the tree is the RSDP (Root System Description Pointer).
To find the RSDP, the OS searches for the signature "RSD PTR "
in well known physical memory locations. Then the OS computes
a table checksum to verify that the signature is really part
of a valid table header.
Some systems have a proper signature but an invalid checksum;
followed elsewhere by a proper signature with valid checksum.
http://bugzilla.kernel.org/show_bug.cgi?id=9444
The Linux RSDP scanning code bailed out on those systems
and as a result they booted with ACPI disabled.
Fix this by deleting the Linux RSDP scanning code and
plugging in the ACPICA RSDP scanning code.
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/tables/Makefile')
| -rw-r--r-- | drivers/acpi/tables/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/tables/Makefile b/drivers/acpi/tables/Makefile index 0a7d7afac255..7385efa61622 100644 --- a/drivers/acpi/tables/Makefile +++ b/drivers/acpi/tables/Makefile | |||
| @@ -2,6 +2,6 @@ | |||
| 2 | # Makefile for all Linux ACPI interpreter subdirectories | 2 | # Makefile for all Linux ACPI interpreter subdirectories |
| 3 | # | 3 | # |
| 4 | 4 | ||
| 5 | obj-y := tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o | 5 | obj-y := tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o |
| 6 | 6 | ||
| 7 | EXTRA_CFLAGS += $(ACPI_CFLAGS) | 7 | EXTRA_CFLAGS += $(ACPI_CFLAGS) |