netdev - RE: [PATCH 7/7] gianfar: add support for wake-on-packet

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Message-ID: <3F607A5180246847A760FD34122A1E052BC98E@039-SN1MPN1-004.039d.mgd.msft.net>
Date:	Tue, 8 Nov 2011 11:07:54 +0000
From:	Li Yang-R58472 <r58472@...escale.com>
To:	Wood Scott-B07421 <B07421@...escale.com>,
	Zhao Chenhui-B35336 <B35336@...escale.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	Fleming Andy-AFLEMING <afleming@...escale.com>
Subject: RE: [PATCH 7/7] gianfar: add support for wake-on-packet



>-----Original Message-----
>From: linuxppc-dev-bounces+leoli=freescale.com@...ts.ozlabs.org
>[mailto:linuxppc-dev-bounces+leoli=freescale.com@...ts.ozlabs.org] On
>Behalf Of Scott Wood
>Sent: Saturday, November 05, 2011 5:14 AM
>To: Zhao Chenhui-B35336
>Cc: netdev@...r.kernel.org; linuxppc-dev@...ts.ozlabs.org; Fleming Andy-
>AFLEMING
>Subject: Re: [PATCH 7/7] gianfar: add support for wake-on-packet
>
>On 11/04/2011 04:11 PM, Scott Wood wrote:
>> On 11/04/2011 07:40 AM, Zhao Chenhui wrote:
>>>  static int gfar_suspend(struct device *dev)  { @@ -1268,9 +1443,17
>>> @@ static int gfar_suspend(struct device *dev)
>>>  	struct gfar __iomem *regs = priv->gfargrp[0].regs;
>>>  	unsigned long flags;
>>>  	u32 tempval;
>>> -
>>>  	int magic_packet = priv->wol_en &&
>>> -		(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
>>> +		(priv->wol_opts & GIANFAR_WOL_MAGIC);
>>> +	int arp_packet = priv->wol_en &&
>>> +		(priv->wol_opts & GIANFAR_WOL_ARP);
>>> +
>>> +	if (arp_packet) {
>>> +		pmc_enable_wake(priv->ofdev, PM_SUSPEND_MEM, 1);
>>> +		pmc_enable_lossless(1);
>>> +		gfar_arp_suspend(ndev);
>>> +		return 0;
>>> +	}
>>
>> How do we know this isn't standby?
>
>Or suspend to disk, for that matter?

There is nothing we can do for hibernation.  The whole system is literally off.

- Leo

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