1 files changed, 44 insertions, 13 deletions

diff --git a/drivers/acpi/hardware/hwsleep.c b/drivers/acpi/hardware/hwsleep.c
index 8bb43cae60c2..6faa76bdc3d5 100644
--- a/drivers/acpi/hardware/hwsleep.c
+++ b/drivers/acpi/hardware/hwsleep.c
@@ -43,6 +43,7 @@
  */
 
 #include <acpi/acpi.h>
+#include <acpi/actables.h>
 
 #define _COMPONENT          ACPI_HARDWARE
 ACPI_MODULE_NAME("hwsleep")
@@ -62,17 +63,32 @@ ACPI_MODULE_NAME("hwsleep")
 acpi_status
 acpi_set_firmware_waking_vector(acpi_physical_address physical_address)
 {
+        struct acpi_table_facs *facs;
+        acpi_status status;
 
         ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector);
 
+        /* Get the FACS */
+
+        status =
+            acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
+                                    (struct acpi_table_header **)&facs);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
         /* Set the vector */
 
-        if (acpi_gbl_common_fACS.vector_width == 32) {
-                *(ACPI_CAST_PTR
-                  (u32, acpi_gbl_common_fACS.firmware_waking_vector))
-                    = (u32) physical_address;
+        if ((facs->length < 32) || (!(facs->xfirmware_waking_vector))) {
+                /*
+                 * ACPI 1.0 FACS or short table or optional X_ field is zero
+                 */
+                facs->firmware_waking_vector = (u32) physical_address;
         } else {
-                *acpi_gbl_common_fACS.firmware_waking_vector = physical_address;
+                /*
+                 * ACPI 2.0 FACS with valid X_ field
+                 */
+                facs->xfirmware_waking_vector = physical_address;
         }
 
         return_ACPI_STATUS(AE_OK);
@@ -97,6 +113,8 @@ ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector)
 acpi_status
 acpi_get_firmware_waking_vector(acpi_physical_address * physical_address)
 {
+        struct acpi_table_facs *facs;
+        acpi_status status;
 
         ACPI_FUNCTION_TRACE(acpi_get_firmware_waking_vector);
 
@@ -104,16 +122,29 @@ acpi_get_firmware_waking_vector(acpi_physical_address * physical_address)
                 return_ACPI_STATUS(AE_BAD_PARAMETER);
         }
 
+        /* Get the FACS */
+
+        status =
+            acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
+                                    (struct acpi_table_header **)&facs);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
         /* Get the vector */
 
-        if (acpi_gbl_common_fACS.vector_width == 32) {
-                *physical_address = (acpi_physical_address)
-                    *
-                    (ACPI_CAST_PTR
-                     (u32, acpi_gbl_common_fACS.firmware_waking_vector));
+        if ((facs->length < 32) || (!(facs->xfirmware_waking_vector))) {
+                /*
+                 * ACPI 1.0 FACS or short table or optional X_ field is zero
+                 */
+                *physical_address =
+                    (acpi_physical_address) facs->firmware_waking_vector;
         } else {
+                /*
+                 * ACPI 2.0 FACS with valid X_ field
+                 */
                 *physical_address =
-                    *acpi_gbl_common_fACS.firmware_waking_vector;
+                    (acpi_physical_address) facs->xfirmware_waking_vector;
         }
 
         return_ACPI_STATUS(AE_OK);
@@ -429,8 +460,8 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
 
         ACPI_FLUSH_CPU_CACHE();
 
-        status = acpi_os_write_port(acpi_gbl_FADT->smi_cmd,
-                                    (u32) acpi_gbl_FADT->S4bios_req, 8);
+        status = acpi_os_write_port(acpi_gbl_FADT.smi_command,
+                                    (u32) acpi_gbl_FADT.S4bios_request, 8);
 
         do {
                 acpi_os_stall(1000);