PCI: quirk_vialatency: Omit reading pci revision ID

Don't read the revision ID unnecessary since the PCI subsystem
fills this field in already.

Updated to fix a thinko bug in a previously sent patch.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 72e0bd5d80ac..53ee09a592b1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -139,25 +139,22 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 	PCI_DEVICE_ID_INTEL_82439TX, 	quir
 static void quirk_vialatency(struct pci_dev *dev)
 {
         struct pci_dev *p;
-        u8 rev;
         u8 busarb;
         /* Ok we have a potential problem chipset here. Now see if we have
            a buggy southbridge */
            
         p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL);
         if (p!=NULL) {
-                pci_read_config_byte(p, PCI_CLASS_REVISION, &rev);
                 /* 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; thanks Dan Hollis */
                 /* Check for buggy part revisions */
-                if (rev < 0x40 || rev > 0x42)
+                if (p->revision < 0x40 || p->revision > 0x42)
                         goto exit;
         } else {
                 p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL);
                 if (p==NULL)    /* No problem parts */
                         goto exit;
-                pci_read_config_byte(p, PCI_CLASS_REVISION, &rev);
                 /* Check for buggy part revisions */
-                if (rev < 0x10 || rev > 0x12) 
+                if (p->revision < 0x10 || p->revision > 0x12)
                         goto exit;
         }