linux-kernel - Re: [PATCH 2/4] PM: Reference counting of power.subsys

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Message-ID: <20110823200955.GA13184@atrey.karlin.mff.cuni.cz>
Date:	Tue, 23 Aug 2011 22:09:55 +0200
From:	Pavel Machek <pavel@....cz>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linux PM mailing list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-sh@...r.kernel.org,
	Magnus Damm <magnus.damm@...il.com>, Greg KH <gregkh@...e.de>
Subject: Re: [PATCH 2/4] PM: Reference counting of power.subsys_data

Hi!
> Since the power.subsys_data device field will be used by multiple
> filesystems, introduce a reference counting mechanism for it to avoid
> freeing it prematurely or changing its value at a wrong time.
> 
> Make the PM clocks management code that currently is the only user of
> power.subsys_data use the new reference counting.
> 
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
> ---
>  drivers/base/power/Makefile    |    2 
>  drivers/base/power/clock_ops.c |   24 ++---------
>  drivers/base/power/common.c    |   86 +++++++++++++++++++++++++++++++++++++++++
>  include/linux/pm.h             |    3 +
>  4 files changed, 95 insertions(+), 20 deletions(-)
> 
> Index: linux-2.6/drivers/base/power/common.c
> ===================================================================
> --- /dev/null
> +++ linux-2.6/drivers/base/power/common.c
> @@ -0,0 +1,86 @@
> +/*
> + * drivers/base/power/common.c - Common device power management code.
> + *
> + * Copyright (C) 2011 Rafael J. Wysocki <rjw@...k.pl>, Renesas Electronics Corp.

This looks like you now work for Renesas....?

-- 
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