On Wednesday 09 May 2007 01:22:29 pm David Brownell wrote:
> static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
> {
> ...
> + switch (state) {
> + case PCI_D0:
> + case PCI_D1:
> + case PCI_D2:
> + case PCI_D3hot:
> + case PCI_D3cold:
> + return acpi_bus_set_power(handle, state_conv[state]);
> + }
> +
> + return -EINVAL;
> }
Did you account for the fact that PCI works on a per-function basis,
but ACPI power management works on a per-slot basis?
We had a bug[1] a while back where e1000 would suspend a device and
call pci_power_state(), which used ACPI to turn off the slot. The
only problem was that this was a dual-port card and the other port
was still active when the lights went out.
Maybe you deal with this already; it just wasn't obvious to me from
a quick glance through your patch.
Bjorn
[1] https://bugzilla.novell.com/show_bug.cgi?id=162320
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