ACPICA: Tables: Allow FADT to be customized with virtual address

ACPICA commit d98de9ca14891130efc5dcdc871b97eb27b4b0f5

FADT parsing code requires FADT to be installed as
ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL, using new
acpi_tb_get_table()/acpi_tb_put_table(), other address types can also be allowed,
thus facilitates FADT customization with virtual address. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/d98de9ca
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, 7 insertions, 7 deletions

diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 5fb838e592dc..81473a4880ce 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -311,6 +311,8 @@ void acpi_tb_parse_fadt(void)
 {
         u32 length;
         struct acpi_table_header *table;
+        struct acpi_table_desc *fadt_desc;
+        acpi_status status;
 
         /*
          * The FADT has multiple versions with different lengths,
@@ -319,14 +321,12 @@ void acpi_tb_parse_fadt(void)
          * Get a local copy of the FADT and convert it to a common format
          * Map entire FADT, assumed to be smaller than one page.
          */
-        length = acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index].length;
-
-        table =
-            acpi_os_map_memory(acpi_gbl_root_table_list.
-                               tables[acpi_gbl_fadt_index].address, length);
-        if (!table) {
+        fadt_desc = &acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index];
+        status = acpi_tb_get_table(fadt_desc, &table);
+        if (ACPI_FAILURE(status)) {
                 return;
         }
+        length = fadt_desc->length;
 
         /*
          * Validate the FADT checksum before we copy the table. Ignore
@@ -340,7 +340,7 @@ void acpi_tb_parse_fadt(void)
 
         /* All done with the real FADT, unmap it */
 
-        acpi_os_unmap_memory(table, length);
+        acpi_tb_put_table(fadt_desc);
 
         /* Obtain the DSDT and FACS tables via their addresses within the FADT */