From mboxrd@z Thu Jan  1 00:00:00 1970
From: Adrian Hunter <adrian.hunter@intel.com>
Subject: Re: [PATCH 0/3] MMC / PM: Make it possible to use PM QoS latency
 constraints
Date: Tue, 06 Mar 2012 12:30:20 +0200
Message-ID: <4F55E73C.10907@intel.com>
References: <201203040101.53177.rjw@sisk.pl>
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To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>, Linux PM list <linux-pm@vger.kernel.org>, Guennadi Liakhovetski <g.liakhovetski@gmx.de>, Chris Ball <cjb@laptop.org>, Ulf Hansson <ulf.hansson@stericsson.com>, Magnus Damm <magnus.damm@gmail.com>, Linus Walleij <linus.walleij@linaro.org>

On 04/03/12 02:01, Rafael J. Wysocki wrote:
> Hi all,
> 
> The goal of this patchset is to allow user space to control the
> responsiveness of the MMC stack related to runtime power management.

I wonder why this is build into mmc and not just a generic runtime pm
facility. e.g.

	/* Set maximum resume latency target to 100ms */
	pm_runtime_set_max_latency(dev, 100);

And then runtime pm will create sysfs attributes etc