[Xen-devel] Re: [PATCH] acpiphp: assume device is in state D0 after powering on a slot.

[Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>]

On Wed, 11 May 2011 17:00:32 +0100
Ian Campbell <ian.campbell@xxxxxxxxxx> wrote:

> Devices which do not support PCI configuration space based power
> management may not otherwise be enabled.
> 
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> ---
>  drivers/pci/hotplug/acpiphp_glue.c |    7 +++++++
>  1 files changed, 7 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/pci/hotplug/acpiphp_glue.c 
> b/drivers/pci/hotplug/acpiphp_glue.c
> index 2f67e9b..a70fa89 100644
> --- a/drivers/pci/hotplug/acpiphp_glue.c
> +++ b/drivers/pci/hotplug/acpiphp_glue.c
> @@ -827,6 +827,13 @@ static int __ref enable_device(struct acpiphp_slot *slot)
>       acpiphp_set_hpp_values(bus);
>       acpiphp_set_acpi_region(slot);
>       pci_enable_bridges(bus);
> +
> +     list_for_each_entry(dev, &bus->devices, bus_list) {
> +             /* Assume that newly added devices are powered on already. */
> +             if (!dev->is_added)
> +                     dev->current_state = PCI_D0;
> +     }
> +
>       pci_bus_add_devices(bus);
>  
>       list_for_each_entry(func, &slot->funcs, sibling) {

applied to linux-next, thanks.

-- 
Jesse Barnes, Intel Open Source Technology Center

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