linux-kernel - Re: [PATCH] NET/r8169: Rework suspend and resume

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Message-ID: <20090405223318.5a494e4e@neptune.home>
Date:	Sun, 5 Apr 2009 22:33:18 +0200
From:	Bruno Prémont <bonbons@...ux-vserver.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Francois Romieu <romieu@...zoreil.com>,
	NetDev <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: [PATCH] NET/r8169: Rework suspend and resume

On Sun, 05 April 2009 "Rafael J. Wysocki" <rjw@...k.pl> wrote:
> From: Rafael J. Wysocki <rjw@...k.pl>
> 
> The recent changes of the PCI PM core allow us to simplify the
> suspend and resume handling in a number of device drivers, since they
> don't need to carry out the general PCI PM operations, such as
> changing the power state of the device, during suspend and resume any
> more.
> 
> Simplify the suspend and resume callbacks of r8169 using the
> observation that the PCI PM core can take care of some operations
> carried out by the driver.
> 
> Additionally, make the shutdown callback of r8169 only put the device
> into a low power state if the system is going to be powered off
> (kexec is known to have problems with network adapters that are put
> into low power states on shutdown).
> 
> This patch has been tested on MSI Wind U100.

Tested against 2.6.29.1 on my Commell LE-365 and suspend (S3) + WoL
still works as expected.

02:08.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
                     RTL-8169 Gigabit Ethernet [10ec:8169] (rev 10)

Bruno
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