linux-kernel - Re: [PATCH] MMC: OMAP HS-MMC: convert to dev_pm

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Date:	Fri, 14 May 2010 09:51:21 -0700
From:	Kevin Hilman <khilman@...prootsystems.com>
To:	Matt Fleming <matt@...sole-pimps.org>
Cc:	linux-omap@...r.kernel.org,
	Madhusudhan Chikkature <madhu.cr@...com>,
	Adrian Hunter <adrian.hunter@...ia.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tony Lindgren <tony@...mide.com>,
	Denis Karpov <ext-denis.2.karpov@...ia.com>,
	linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: Re: [PATCH] MMC: OMAP HS-MMC: convert to dev_pm_ops

Matt Fleming <matt@...sole-pimps.org> writes:

> On Tue, 11 May 2010 14:57:16 -0700, Kevin Hilman <khilman@...prootsystems.com> wrote:
>> 
>> Note that dev_pm_ops version of the suspend hook no longer takes a
>> 'state' argument.  However, the MMC core function mmc_suspend_host()
>> still takes a 'state' argument, but it is unused, so a dummy
>> state variable was created to pass to the MMC core.
>
> Hmm.. instead of passing this dummy state argument why don't we just
> remove the argument from mmc_suspend_host()? Like you said, it's unused,
> so I don't see a reason to keep it around?

I don't see a reason either, but it requires patching the MMC core as
well as all the users.  As I'm not an MMC core person, I thought this
best left to someone in that domain.

Fixing the core and callers could easily be done on top of this patch.

Kevin


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