x86, mtrr: Use pci_dev->revision

This code uses PCI_CLASS_REVISION instead of PCI_REVISION_ID, so
it wasn't converted by commit 44c10138fd4 ("PCI: Change all
drivers to use pci_device->revision") before being moved to
arch/x86/...

Do it now at last -- and save one level of indentation...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/201107012242.08347.sshtylyov@ru.mvista.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c
index 707b6377adf12700dcf6573ce0ca1e73664457a3..08119a37e53c1f11b044ce5c865c7ad9339c4fd0 100644 (file)
--- a/arch/x86/kernel/cpu/mtrr/main.c
+++ b/arch/x86/kernel/cpu/mtrr/main.c
@@ -79,7 +79,6 @@ void set_mtrr_ops(const struct mtrr_ops *ops)
 static int have_wrcomb(void)
 {
        struct pci_dev *dev;
-       u8 rev;
 
        dev = pci_get_class(PCI_CLASS_BRIDGE_HOST << 8, NULL);
        if (dev != NULL) {
@@ -89,13 +88,11 @@ static int have_wrcomb(void)
                 * chipsets to be tagged
                 */
                if (dev->vendor == PCI_VENDOR_ID_SERVERWORKS &&
-                   dev->device == PCI_DEVICE_ID_SERVERWORKS_LE) {
-                       pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev);
-                       if (rev <= 5) {
-                               pr_info("mtrr: Serverworks LE rev < 6 detected. Write-combining disabled.\n");
-                               pci_dev_put(dev);
-                               return 0;
-                       }
+                   dev->device == PCI_DEVICE_ID_SERVERWORKS_LE &&
+                   dev->revision <= 5) {
+                       pr_info("mtrr: Serverworks LE rev < 6 detected. Write-combining disabled.\n");
+                       pci_dev_put(dev);
+                       return 0;
                }
                /*
                 * Intel 450NX errata # 23. Non ascending cacheline evictions to