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[PATCH] asus vt8235 router buggy bios workaround
Hopefully fix http://bugzilla.kernel.org/show_bug.cgi?id=5235 Similar problem has been reported before here: http://groups.google.com/group/linux.kernel/browse_thread/thread/def4ca19dbc3cd4/5cffbf349f2c87a4?tvc=2&q=Aleksey+Gorelov&hl=en#5cffbf349f2c87a4 and was related to bug in BIOS reporting 82C686 router compatible to 586. I suspect BIOS on this board has similar issue: reports VT8235 router to be compatible with 586 one - which is obviously not true. Patch from the link above has already incorporated in both 2.6 & 2.4 series, but might not work in this particular case. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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434440a280
commit
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1 changed files with 36 additions and 19 deletions
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@ -547,18 +547,34 @@ static __init int intel_router_probe(struct irq_router *r, struct pci_dev *route
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return 0;
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}
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static __init int via_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
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static __init int via_router_probe(struct irq_router *r,
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struct pci_dev *router, u16 device)
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{
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/* FIXME: We should move some of the quirk fixup stuff here */
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if (router->device == PCI_DEVICE_ID_VIA_82C686 &&
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device == PCI_DEVICE_ID_VIA_82C586_0) {
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/* Asus k7m bios wrongly reports 82C686A as 586-compatible */
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/*
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* work arounds for some buggy BIOSes
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*/
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if (device == PCI_DEVICE_ID_VIA_82C586_0) {
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switch(router->device) {
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case PCI_DEVICE_ID_VIA_82C686:
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/*
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* Asus k7m bios wrongly reports 82C686A
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* as 586-compatible
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*/
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device = PCI_DEVICE_ID_VIA_82C686;
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break;
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case PCI_DEVICE_ID_VIA_8235:
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/**
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* Asus a7v-x bios wrongly reports 8235
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* as 586-compatible
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*/
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device = PCI_DEVICE_ID_VIA_8235;
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break;
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}
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}
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switch(device)
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{
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switch(device) {
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case PCI_DEVICE_ID_VIA_82C586_0:
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r->name = "VIA";
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r->get = pirq_via586_get;
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@ -567,6 +583,7 @@ static __init int via_router_probe(struct irq_router *r, struct pci_dev *router,
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case PCI_DEVICE_ID_VIA_82C596:
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case PCI_DEVICE_ID_VIA_82C686:
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case PCI_DEVICE_ID_VIA_8231:
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case PCI_DEVICE_ID_VIA_8235:
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/* FIXME: add new ones for 8233/5 */
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r->name = "VIA";
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r->get = pirq_via_get;
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