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[ACPI] ACPICA 20050815

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Implemented a full bytewise compare to determine if a table load
request is attempting to load a duplicate table. The compare is
performed if the table signatures and table lengths match. This
will allow different tables with the same OEM Table ID and
revision to be loaded.

Although the BIOS is technically violating the ACPI spec when
this happens -- it does happen -- so Linux must handle it.

Signed-off-by: Robert Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore
2005-08-15 03:42:00 -08:00
committed by Len Brown
parent 27a639a92d
commit a18ecf413c
5 changed files with 30 additions and 19 deletions
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6
drivers/acpi/utilities/utmisc.c
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@@ -78,6 +78,10 @@ acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id)
for (i = 0; i < 32; i++) {
if (!(acpi_gbl_owner_id_mask & (1 << i))) {
ACPI_DEBUG_PRINT((ACPI_DB_VALUES,
"Current owner_id mask: %8.8X New ID: %2.2X\n",
acpi_gbl_owner_id_mask, (i + 1)));
acpi_gbl_owner_id_mask |= (1 << i);
*owner_id = (acpi_owner_id) (i + 1);
goto exit;
@@ -119,7 +123,7 @@ void acpi_ut_release_owner_id(acpi_owner_id * owner_id_ptr)
acpi_owner_id owner_id = *owner_id_ptr;
acpi_status status;
ACPI_FUNCTION_TRACE("ut_release_owner_id");
ACPI_FUNCTION_TRACE_U32("ut_release_owner_id", owner_id);
/* Always clear the input owner_id (zero is an invalid ID) */