linux-kernel - Re: [BUG] MIPS: Hibernation in the latest linux-mips:master branch not work

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Message-ID: <20090702105024.GD14804@linux-mips.org>
Date:	Thu, 2 Jul 2009 11:50:24 +0100
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Wu Zhangjin <wuzhangjin@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mips@...ux-mips.org,
	Pavel Machek <pavel@....cz>
Subject: Re: [BUG] MIPS: Hibernation in the latest linux-mips:master branch
	not work

On Thu, Jul 02, 2009 at 09:04:07AM +0800, Wu Zhangjin wrote:

> > > hi, ralf, in the latest master branch of linux-mips git repo, seems
> > > there is a need to select the SYS_SUPPORTS_HOTPLUG_CPU option in every
> > > uni-processor board, otherwise, the suspend/hibernation can not be used,
> > > because you have set:
> > > 
> > > config ARCH_HIBERNATION_POSSIBLE
> > >     def_bool y
> > >     depends on SYS_SUPPORTS_HOTPLUG_CPU
> > > 
> > > config ARCH_SUSPEND_POSSIBLE
> > >     def_bool y
> > >     depends on SYS_SUPPORTS_HOTPLUG_CPU
> > > 
> > > so, the board-specific patch must be pushed by the maintainers of
> > > boards. and if the board support SMP, they must implement the
> > > mips-specific hotplug support, is this right? I have selected
> > > SYS_SUPPORTS_HOTPLUG_CPU in LEMOTE_FULONG and will push a relative patch
> > > later.
> > 
> > I think below patch should take care of this problem.  It simply assumes
> > that all uniprocessor systems support suspend and hibernate.  That's an
> > assumption that I'm not to unhappy with though it may force us to fix a
> > few systems.
> > 
> 
> This patch is better.
> 
> Thanks!
> Wu Zhangjin

Thanks, patch applied.

You're welcome!

  Ralf
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