ACPICA: Tables: Fix global table list issues by removing fixed table indexes

ACPICA commit c0b38b4c3982c2336ee92a2a14716107248bd941

The fixed table indexes leave holes in the global table list:
 1. One hole can be seen when there is only 1 FACS provided by the BIOS.
 2. Tow holes can be seen when it is a reduced hardware platform.
The holes do not break OSPMs but have broken ACPI debugger "tables"
command.

Also the "fixed table indexes" mechanism may make the descriptors of the
standard tables installed earlier than DSDT to be overwritten by the
descriptors of the fixed tables. For example, FACP disappears from the
global table list after DSDT is installed.

This patch fixes all above issues by removing the "fixed table indexes"
mechanism which is too complicated to be maintained in a regression safe
manner. After removal, the table loader will determine the indexes of the
fixed tables. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/c0b38b4c
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
index 6cbb2f7a35e8..fb4d4e64f8aa 100644
--- a/drivers/acpi/acpica/tbxfload.c
+++ b/drivers/acpi/acpica/tbxfload.c
@@ -116,12 +116,12 @@ static acpi_status acpi_tb_load_namespace(void)
 	if (!acpi_gbl_root_table_list.current_table_count ||
 	    !ACPI_COMPARE_NAME(&
 			       (acpi_gbl_root_table_list.
-				tables[ACPI_TABLE_INDEX_DSDT].signature),
+				tables[acpi_gbl_dsdt_index].signature),
 			       ACPI_SIG_DSDT)
 	    ||
 	    ACPI_FAILURE(acpi_tb_validate_table
 			 (&acpi_gbl_root_table_list.
-			  tables[ACPI_TABLE_INDEX_DSDT]))) {
+			  tables[acpi_gbl_dsdt_index]))) {
 		status = AE_NO_ACPI_TABLES;
 		goto unlock_and_exit;
 	}
@@ -133,7 +133,7 @@ static acpi_status acpi_tb_load_namespace(void)
 	 * .Pointer field is not validated until after call to acpi_tb_validate_table.
 	 */
 	acpi_gbl_DSDT =
-	    acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].pointer;
+	    acpi_gbl_root_table_list.tables[acpi_gbl_dsdt_index].pointer;
 
 	/*
 	 * Optionally copy the entire DSDT to local memory (instead of simply
@@ -142,7 +142,7 @@ static acpi_status acpi_tb_load_namespace(void)
 	 * the DSDT.
 	 */
 	if (acpi_gbl_copy_dsdt_locally) {
-		new_dsdt = acpi_tb_copy_dsdt(ACPI_TABLE_INDEX_DSDT);
+		new_dsdt = acpi_tb_copy_dsdt(acpi_gbl_dsdt_index);
 		if (new_dsdt) {
 			acpi_gbl_DSDT = new_dsdt;
 		}
@@ -159,7 +159,7 @@ static acpi_status acpi_tb_load_namespace(void)
 
 	/* Load and parse tables */
 
-	status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node);
+	status = acpi_ns_load_table(acpi_gbl_dsdt_index, acpi_gbl_root_node);
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, status, "[DSDT] table load failed"));
 		tables_failed++;