linux-2.4.20-serverworks.patch

   1 --- ../kernel-2.4.20.orig/linux-2.4.20/drivers/pci/quirks.c     2003-01-27 16:58:29.000000000 -0500
   2 +++ linux-2.4.20/drivers/pci/quirks.c   2003-01-27 17:13:22.000000000 -0500
   3 @@ -615,6 +615,25 @@
   4         }
   5  }
   6
   7 +
   8 +static void __init quirk_serverworks_writeoverlap(struct pci_dev *dev)
   9 +{
  10 +       /* extended memory controller configuration register 0 */
  11 +       static const int emccr = 0xCD;
  12 +       static const u8 wovl = (1 << 1); /* Write Overlap Enable bit */
  13 +       u8 tmp;
  14 +
  15 +       /* this is multi-function PCI device, only apply fixup to function 0 */
  16 +       if (PCI_FUNC(dev->devfn))
  17 +               return;
  18 +
  19 +       pci_read_config_byte(dev, emccr, &tmp);
  20 +       if (tmp & wovl) {
  21 +               tmp &= ~wovl; /* clear Write Overlap Enable */
  22 +               pci_write_config_byte(dev, emccr, tmp);
  23 +       }
  24 +}
  25 +
  26  /*
  27   *  The main table of quirks.
  28   */
  29 @@ -661,6 +680,7 @@
  30         { PCI_FIXUP_HEADER,     PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82371SB_2,  quirk_piix3_usb },
  31         { PCI_FIXUP_HEADER,     PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_82371AB_2,  quirk_piix3_usb },
  32         { PCI_FIXUP_FINAL,      PCI_ANY_ID,             PCI_ANY_ID,                     quirk_cardbus_legacy },
  33 +       { PCI_FIXUP_FINAL,      PCI_VENDOR_ID_SERVERWORKS, 0x0014, quirk_serverworks_writeoverlap },
  34
  35  #ifdef CONFIG_X86_IO_APIC
  36         { PCI_FIXUP_FINAL,      PCI_VENDOR_ID_VIA,      PCI_DEVICE_ID_VIA_82C686,       quirk_via_ioapic },