1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c
index 5cfcff532545..e783dbf0f162 100644
--- a/drivers/clocksource/acpi_pm.c
+++ b/drivers/clocksource/acpi_pm.c
@@ -105,14 +105,11 @@ static inline void acpi_pm_need_workaround(void)
  */
 static void __devinit acpi_pm_check_blacklist(struct pci_dev *dev)
 {
-        u8 rev;
-
         if (acpi_pm_good)
                 return;
 
-        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
         /* the bug has been fixed in PIIX4M */
-        if (rev < 3) {
+        if (dev->revision < 3) {
                 printk(KERN_WARNING "* Found PM-Timer Bug on the chipset."
                        " Due to workarounds for a bug,\n"
                        "* this clock source is slow. Consider trying"