Re: SMbus not enabled

From: Andrew Morton
Date: Tue Mar 15 2005 - 01:26:34 EST

"Enrico Bartky" <DOSProfi@xxxxxx> wrote:
> my notebook have a SiS 964 Chipset and "quirked" by "quirk_sis_503", ...
> but there is no SMbus device. If I add a call to the "quirk_sis_96x_smbus"
> function directly from the "quirk_sis_503" function, the smbus is present,
> but I think a call to a quirk from a quirk is not optimal. Is there a better
> solution?

(Please wrap your email lines before column 80)

What version of the kernel are you using?

I assume that you mean that the machine does have SMBus, but that it is not
being recognised by the kernel?

It could be that we don't have the appropriate PCI IDs in there. Please
run `lspci -vvxx' and send the part which is relevant to the SMBus

Also, in drivers/pci/quirks.c you can change `#undef DEBUG' to `#define
DEBUG' and it will print useful information.

This patch will help, too:

--- 25/drivers/pci/quirks.c~a 2005-03-14 22:23:08.000000000 -0800
+++ 25-akpm/drivers/pci/quirks.c 2005-03-14 22:23:57.000000000 -0800
static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end)
while (f < end) {
+ pr_debug(PCI: quirks: inspecting %04x:%04x\n",
+ dev->vendor, dev->device);
if ((f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) &&
(f->device == dev->device || f->device == (u16) PCI_ANY_ID)) {
pr_debug("PCI: Calling quirk %p for %s\n", f->hook, pci_name(dev));

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at