linux-kernel - Re: [RFC] PCI/PM: Add ABI document for sysfs file d3cold

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Message-Id: <201207272107.11080.rjw@sisk.pl>
Date:	Fri, 27 Jul 2012 21:07:10 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Huang Ying <ying.huang@...el.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-pm@...r.kernel.org,
	Bjorn Mork <bjorn@...k.no>
Subject: Re: [RFC] PCI/PM: Add ABI document for sysfs file d3cold_allowed

On Friday, July 27, 2012, Huang Ying wrote:
> This patch adds ABI document for the following sysfs file:
> 
> /sys/bus/pci/devices/.../d3cold_allowed
> 
> Signed-off-by: Huang Ying <ying.huang@...el.com>

Acked-by: Rafael J. Wysocki <rjw@...k.pl>

> ---
>  Documentation/ABI/testing/sysfs-bus-pci |   12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> --- a/Documentation/ABI/testing/sysfs-bus-pci
> +++ b/Documentation/ABI/testing/sysfs-bus-pci
> @@ -210,3 +210,15 @@ Users:
>  		firmware assigned instance number of the PCI
>  		device that can help in understanding the firmware
>  		intended order of the PCI device.
> +
> +What:		/sys/bus/pci/devices/.../d3cold_allowed
> +Date:		July 2012
> +Contact:	Huang Ying <ying.huang@...el.com>
> +Description:
> +		d3cold_allowed is bit to control whether the corresponding PCI
> +		device can be put into D3Cold state.  If it is cleared, the
> +		device will never be put into D3Cold state.  If it is set, the
> +		device may be put into D3Cold state if other requirement are
> +		satisfied too.  Reading this attribute will show the current
> +		value of d3cold_allowed bit.  Writting this attribute will set
> +		the value of d3cold_allowed bit.
> 
> 

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