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

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Message-ID: <20110511091405.1266a34e@jbarnes-desktop>
Date:	Wed, 11 May 2011 09:14:05 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Ian Campbell <ian.campbell@...rix.com>
Cc:	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	xen-devel@...ts.xensource.com,
	Stefano Stabellini <Stefano.Stabellini@...citrix.com>
Subject: Re: [PATCH] acpiphp: assume device is in state D0 after powering on
 a slot.

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

> Devices which do not support PCI configuration space based power
> management may not otherwise be enabled.
> 
> Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
> ---
>  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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