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From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Ulf Hansson <ulf.hansson@stericsson.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
	Vipul Kumar Samar <vipulkumar.samar@st.com>,
	Russell King <linux@arm.linux.org.uk>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Grant Likely <grant.likely@secretlab.ca>,
	spi-devel-general@lists.sourceforge.net,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] spi/pl022: Activate resourses before deactivate them in suspend
Date: Sat, 27 Oct 2012 22:46:44 +0100	[thread overview]
Message-ID: <20121027214642.GH4564@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1349423012-18048-1-git-send-email-ulf.hansson@stericsson.com>


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On Fri, Oct 05, 2012 at 09:43:32AM +0200, Ulf Hansson wrote:

> To be able to deactivate resourses in suspend, the resourses must
> first be surely active. This is done with a pm_runtime_get_sync.
> Once the resourses are restored to active state again in resume,
> the runtime pm usage count can be decreased with a pm_runtime_put.

The PM core will ensure devices are runtime resumed before we enter
suspend precisely due to this sort of issue.

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WARNING: multiple messages have this Message-ID (diff)
From: broonie@opensource.wolfsonmicro.com (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] spi/pl022: Activate resourses before deactivate them in suspend
Date: Sat, 27 Oct 2012 22:46:44 +0100	[thread overview]
Message-ID: <20121027214642.GH4564@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1349423012-18048-1-git-send-email-ulf.hansson@stericsson.com>

On Fri, Oct 05, 2012 at 09:43:32AM +0200, Ulf Hansson wrote:

> To be able to deactivate resourses in suspend, the resourses must
> first be surely active. This is done with a pm_runtime_get_sync.
> Once the resourses are restored to active state again in resume,
> the runtime pm usage count can be decreased with a pm_runtime_put.

The PM core will ensure devices are runtime resumed before we enter
suspend precisely due to this sort of issue.
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  parent reply	other threads:[~2012-10-27 21:46 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-05  7:43 [PATCH] spi/pl022: Activate resourses before deactivate them in suspend Ulf Hansson
2012-10-05  7:43 ` Ulf Hansson
     [not found] ` <1349423012-18048-1-git-send-email-ulf.hansson-0IS4wlFg1OjSUeElwK9/Pw@public.gmane.org>
2012-10-12 14:42   ` Ulf Hansson
2012-10-12 14:42     ` Ulf Hansson
     [not found]     ` <CAPDyKFpa8XoEy-kq3nq0dbRtM=a1wJ7cx=OzCOqMY1PmXrXJYw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-14  5:27       ` Mark Brown
2012-10-14  5:27         ` Mark Brown
2012-10-27 21:46 ` Mark Brown [this message]
2012-10-27 21:46   ` Mark Brown
2012-10-28 19:52   ` Linus Walleij
2012-10-28 19:52     ` Linus Walleij
     [not found]     ` <CACRpkdbCfxnSSLR6GoSbAxtfnwOivxCCrLtwnR=9tpwpfACqTQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-28 20:28       ` Ulf Hansson
2012-10-28 20:28         ` Ulf Hansson
     [not found]         ` <CAPDyKFoOJz6608b4z2PoW8ODvTJVZRq-yB0itfXnuoXdR1SpGQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-10-28 21:09           ` Alan Stern
2012-10-28 21:09             ` Alan Stern
     [not found]             ` <Pine.LNX.4.44L0.1210281659520.9245-100000-pYrvlCTfrz9XsRXLowluHWD2FQJk+8+b@public.gmane.org>
2012-10-30 17:05               ` Ulf Hansson
2012-10-30 17:05                 ` Ulf Hansson

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