Commit 0426a096 authored by Dave Jones's avatar Dave Jones Committed by Linus Torvalds

[PATCH] KT266x latency fix.

From 2.4, see comment in diff.
parent 8bd2ec16
......@@ -148,7 +148,12 @@ static void __init pci_fixup_via_northbridge_bug(struct pci_dev *d)
pci_read_config_byte(d, PCI_REVISION_ID, &revision);
if (d->device == PCI_DEVICE_ID_VIA_8367_0) {
where = 0x95; /* the memory write queue timer register is
/* fix pci bus latency issues resulted by NB bios error
it appears on bug free^Wreduced kt266x's bios forces
NB latency to zero */
pci_write_config_byte(d, PCI_LATENCY_TIMER, 0);
where = 0x95; /* the memory write queue timer register is
different for the KT266x's: 0x95 not 0x55 */
} else if (d->device == PCI_DEVICE_ID_VIA_8363_0 &&
(revision == VIA_8363_KL133_REVISION_ID ||
......@@ -157,7 +162,7 @@ static void __init pci_fixup_via_northbridge_bug(struct pci_dev *d)
causes screen corruption on the KL133/KM133 */
}
pci_read_config_byte(d, where, &v);
pci_read_config_byte(d, where, &v);
if (v & ~mask) {
printk(KERN_WARNING "Disabling VIA memory write queue (PCI ID %04x, rev %02x): [%02x] %02x & %02x -> %02x\n", \
d->device, revision, where, v, mask, v & mask);
......
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