ACPICA: Fix for FADT conversion in 64-bit mode

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 14 insertions, 7 deletions

diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/tables/tbutils.c
index 2f4ab751d778..77c7e873ec37 100644
--- a/drivers/acpi/tables/tbutils.c
+++ b/drivers/acpi/tables/tbutils.c
@@ -131,6 +131,8 @@ acpi_tb_print_table_header(acpi_physical_address address,
                            ((struct acpi_table_rsdp *)header)->revision,
                            ((struct acpi_table_rsdp *)header)->oem_id));
         } else {
+                /* Standard ACPI table with full common header */
+
                 ACPI_INFO((AE_INFO,
                            "%4.4s @ 0x%p/0x%04X (v%3.3d %6.6s %8.8s 0x%08X %4.4s 0x%08X)",
                            header->signature, ACPI_CAST_PTR(void, address),
@@ -160,7 +162,7 @@ acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct,
                              u8 bit_width, u64 address)
 {
 
-        ACPI_STORE_ADDRESS(new_gas_struct->address, address);
+        ACPI_MOVE_64_TO_64(&new_gas_struct->address, &address);
         new_gas_struct->space_id = ACPI_ADR_SPACE_SYSTEM_IO;
         new_gas_struct->bit_width = bit_width;
         new_gas_struct->bit_offset = 0;
@@ -284,13 +286,15 @@ static void acpi_tb_convert_fadt(void)
                     ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT,
                                  fadt_conversion_table[i].target);
 
+                /* Expand only if the X target is null */
+
                 if (!target->address) {
                         acpi_tb_init_generic_address(target,
                                                      *ACPI_ADD_PTR(u8,
                                                                    &acpi_gbl_FADT,
                                                                    fadt_conversion_table
                                                                    [i].length),
-                                                     *ACPI_ADD_PTR(u64,
+                                                     *ACPI_ADD_PTR(u32,
                                                                    &acpi_gbl_FADT,
                                                                    fadt_conversion_table
                                                                    [i].source));
@@ -301,6 +305,10 @@ static void acpi_tb_convert_fadt(void)
          * Calculate separate GAS structs for the PM1 Enable registers.
          * These addresses do not appear (directly) in the FADT, so it is
          * useful to calculate them once, here.
+         *
+         * The PM event blocks are split into two register blocks, first is the
+         * PM Status Register block, followed immediately by the PM Enable Register
+         * block. Each is of length (pm1_event_length/2)
          */
         pm1_register_length = (u8) ACPI_DIV_2(acpi_gbl_FADT.pm1_event_length);
 
@@ -308,17 +316,16 @@ static void acpi_tb_convert_fadt(void)
 
         acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable,
                                      pm1_register_length,
-                                     (u64) (acpi_gbl_FADT.xpm1a_event_block.
-                                            address + pm1_register_length));
+                                     (acpi_gbl_FADT.xpm1a_event_block.address +
+                                      pm1_register_length));
 
         /* PM1B is optional; leave null if not present */
 
         if (acpi_gbl_FADT.xpm1b_event_block.address) {
                 acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable,
                                              pm1_register_length,
-                                             (u64) (acpi_gbl_FADT.
-                                                    xpm1b_event_block.address +
-                                                    pm1_register_length));
+                                             (acpi_gbl_FADT.xpm1b_event_block.
+                                              address + pm1_register_length));
         }
 
         /* Global FADT is the new common V2.0 FADT  */