1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index f7de02a6f497..e1ca86dfdd66 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -115,7 +115,6 @@ struct acpi_processor_errata errata __read_mostly;
 
 static int acpi_processor_errata_piix4(struct pci_dev *dev)
 {
-        u8 rev = 0;
         u8 value1 = 0;
         u8 value2 = 0;
 
@@ -127,9 +126,7 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev)
          * Note that 'dev' references the PIIX4 ACPI Controller.
          */
 
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-
-        switch (rev) {
+        switch (dev->revision) {
         case 0:
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
                 break;
@@ -147,7 +144,7 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev)
                 break;
         }
 
-        switch (rev) {
+        switch (dev->revision) {
 
         case 0:         /* PIIX4 A-step */
         case 1:         /* PIIX4 B-step */