netdev - Re: [PATCH 2/2] r8169: transition to D0 state at shutdown

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Message-ID: <20120215001453.GB11453@electric-eye.fr.zoreil.com>
Date:	Wed, 15 Feb 2012 01:14:53 +0100
From:	Francois Romieu <romieu@...zoreil.com>
To:	Sameer Nanda <snanda@...omium.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, hayeswang@...ltek.com,
	netdev@...r.kernel.org, linux-pm@...ts.linux-foundation.org
Subject: Re: [PATCH 2/2] r8169: transition to D0 state at shutdown

Sameer Nanda <snanda@...omium.org> :
> With runtime PM, if the ethernet cable is disconnected, the device is
> transitioned to D3 state to conserve energy. If the system is shutdown
> in this state, any register accesses in rtl_shutdown are dropped on
> the floor.
> 
> This patch transitions the device back to D0 state in rtl_shutdown if
> the device was runtime PM suspended. In addition, since runtiome PM
> also mucks around with WOL options, the saved WOL options are also
> restored in rtl_shutdown.

Ok.

I'll leave Rafael choose if he prefers the runtime pm layer to handle it
or not.

-- 
Ueimor
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