linux-kernel - Re: set power state of firewire host during suspend

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Message-ID: <45007B8C.5090002@s5r6.in-berlin.de>
Date:	Thu, 07 Sep 2006 22:05:32 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Pavel Machek <pavel@....cz>
CC:	bcollins@...ian.org, scjody@...ernduck.com,
	linux1394-devel@...ts.sourceforge.net,
	kernel list <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: set power state of firewire host during suspend

Pavel Machek wrote:
> Put firewire host controller in PCI Dx state for system suspend.
> (I was not able to measure any power savings, but it sounds like right
> thing to do, anyway.)
> 
> Signed-off-by: Pavel Machek <pavel@...e.cz>
[...]
> --- a/drivers/ieee1394/ohci1394.c
> +++ b/drivers/ieee1394/ohci1394.c
> @@ -3565,6 +3565,7 @@ static int ohci1394_pci_suspend (struct 
>  	}
>  #endif
>  
> +	pci_set_power_state(pdev, pci_choose_state(pdev, state));
>  	return 0;
>  }

The order with existing PPC_PMAC code needs to be swapped. And the
resume hook should set the power state too, right? I will post an update
patch soon.
-- 
Stefan Richter
-=====-=-==- =--= --===
http://arcgraph.de/sr/
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