diff options
| author |   aleksey_gorelov@phoenix.com <aleksey_gorelov@phoenix.com> | 2005-10-30 14:59:36 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-30 17:37:12 -0800 |
| commit | 750deaa4021da1cf9fdb1e20861a10c76fd7f2bc (patch) | |
| tree | 662e9c2e22c44e3610d979f7c5e6b1b33bd2dc53 /arch/i386 | |
| parent | [PATCH] x86: bug fix in P6 Machine check initialization (diff) | |
| download | linux-dev-750deaa4021da1cf9fdb1e20861a10c76fd7f2bc.tar.xz linux-dev-750deaa4021da1cf9fdb1e20861a10c76fd7f2bc.zip | |
[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>
Diffstat (limited to 'arch/i386')
| -rw-r--r-- | arch/i386/pci/irq.c | 55 |
1 files changed, 36 insertions, 19 deletions
diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c index cddafe33ff7c..19e6f4871d1e 100644 --- a/arch/i386/pci/irq.c +++ b/arch/i386/pci/irq.c @@ -547,31 +547,48 @@ static __init int intel_router_probe(struct irq_router *r, struct pci_dev *route return 0; } -static __init int via_router_probe(struct irq_router *r, struct pci_dev *router, u16 device) +static __init int via_router_probe(struct irq_router *r, + struct pci_dev *router, u16 device) { /* FIXME: We should move some of the quirk fixup stuff here */ - if (router->device == PCI_DEVICE_ID_VIA_82C686 && - device == PCI_DEVICE_ID_VIA_82C586_0) { - /* Asus k7m bios wrongly reports 82C686A as 586-compatible */ - device = PCI_DEVICE_ID_VIA_82C686; + /* + * work arounds for some buggy BIOSes + */ + if (device == PCI_DEVICE_ID_VIA_82C586_0) { + switch(router->device) { + case PCI_DEVICE_ID_VIA_82C686: + /* + * Asus k7m bios wrongly reports 82C686A + * as 586-compatible + */ + device = PCI_DEVICE_ID_VIA_82C686; + break; + case PCI_DEVICE_ID_VIA_8235: + /** + * Asus a7v-x bios wrongly reports 8235 + * as 586-compatible + */ + device = PCI_DEVICE_ID_VIA_8235; + break; + } } - switch(device) - { - case PCI_DEVICE_ID_VIA_82C586_0: - r->name = "VIA"; - r->get = pirq_via586_get; - r->set = pirq_via586_set; - return 1; - case PCI_DEVICE_ID_VIA_82C596: - case PCI_DEVICE_ID_VIA_82C686: - case PCI_DEVICE_ID_VIA_8231: + switch(device) { + case PCI_DEVICE_ID_VIA_82C586_0: + r->name = "VIA"; + r->get = pirq_via586_get; + r->set = pirq_via586_set; + return 1; + case PCI_DEVICE_ID_VIA_82C596: + case PCI_DEVICE_ID_VIA_82C686: + case PCI_DEVICE_ID_VIA_8231: + case PCI_DEVICE_ID_VIA_8235: /* FIXME: add new ones for 8233/5 */ - r->name = "VIA"; - r->get = pirq_via_get; - r->set = pirq_via_set; - return 1; + r->name = "VIA"; + r->get = pirq_via_get; + r->set = pirq_via_set; + return 1; } return 0; } |