linux-kernel - Re: [RFC PATCH 1/2] pm: Add PM domain notifications

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Message-ID: <CAAFQd5DrzYRCF3tW7cg=rZ3wB1G2kQtWbCx+Pby9obNTewsFdg@mail.gmail.com>
Date:	Thu, 11 Dec 2014 20:04:25 +0900
From:	Tomasz Figa <tfiga@...omium.org>
To:	Sylwester Nawrocki <s.nawrocki@...sung.com>
Cc:	linux-rockchip@...ts.infradead.org, linux-pm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	iommu@...ts.linux-foundation.org,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
	Heiko Stuebner <heiko@...ech.de>,
	Joerg Roedel <joro@...tes.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Kevin Hilman <khilman@...aro.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Daniel Kurtz <djkurtz@...omium.org>
Subject: Re: [RFC PATCH 1/2] pm: Add PM domain notifications

Hi Sylwester,

On Thu, Dec 11, 2014 at 7:36 PM, Sylwester Nawrocki
<s.nawrocki@...sung.com> wrote:
>
> Hi Tomasz,
>
> On 11/12/14 09:26, Tomasz Figa wrote:
> > From: Sylwester Nawrocki <s.nawrocki@...sung.com>
> >
> > This patch adds notifiers to the runtime PM/genpd subsystem. It is now
> > possible to register a notifier, which will be called before and after
> > the generic power domain subsystem calls the power domain's power_on
> > and power_off callbacks.
> >
> > Signed-off-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
> > [tfiga@...omium.org: rebased]
> > Signed-off-by: Tomasz Figa <tfiga@...omium.org>
>
> Not sure if you've noticed it, I posted an updated version of this patch
> recently [1]. The notifiers list is moved to struct generic_pm_domain
> there and it also allows to register a notifier for selected power domain
> by name.
[snip]
> [1] http://www.spinics.net/lists/linux-samsung-soc/msg38549.html

Ah, haven't noticed, sorry. The API using devices looks the same, so I
guess we can simply have patch 2/2 of this series applied on top of
your patch.

By the way, look-up by name (presumably hardcoded somewhere?) sounds a
bit strange to me. What was the reason for it to be added?

Best regards,
Tomasz
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