netdev - Re: [net-next 11/12] e1000e: Fix EEE in S5 w/ Runtime PM enabled

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Message-ID: <20140729221123.GA31298@electric-eye.fr.zoreil.com>
Date:	Wed, 30 Jul 2014 00:11:23 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	"Ertman, David M" <david.m.ertman@...el.com>
Cc:	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"nhorman@...hat.com" <nhorman@...hat.com>,
	"sassmann@...hat.com" <sassmann@...hat.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>
Subject: Re: [net-next 11/12] e1000e: Fix EEE in S5 w/ Runtime PM enabled

Ertman, David M <david.m.ertman@...el.com> :
[...]

Thanks for the explanation.

[...]
> According to Documentation/power/runtime_pm.txt and
> Documentation/power/pci.txt, the idle call-back is the correct place to
> put the check for applicability, and initiation, of a runtime suspend
> event. The duplication of effort between watchdog and runtime_idle is
> something that I need to explore. There are flow issues involved that will
> take some unraveling to fully evaluate.

I agree (almost: s/the correct place/a correct place/).

Rafael's e4fbce740f078bbc925ba5c86648d9c883968479 illustrated the shrinking
idle callback. It nicely trimmed some complexity between runtime PM and the
relevant driver. It may be of use.

--
Ueimor
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