linux-kernel - Re: [PATCH 3/3] spi: rspi: Add runtime PM support, using spi core auto_runtime

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Message-ID: <20140311132652.GS28112@sirena.org.uk>
Date:	Tue, 11 Mar 2014 13:26:52 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	linux-spi <linux-spi@...r.kernel.org>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Geert Uytterhoeven <geert+renesas@...ux-m68k.org>
Subject: Re: [PATCH 3/3] spi: rspi: Add runtime PM support, using spi core
 auto_runtime_pm

On Tue, Mar 11, 2014 at 02:10:31PM +0100, Geert Uytterhoeven wrote:

> Can you please elaborate what should be fixed?

> If I disable CONFIG_PM_RUNTIME, the kernel prints:

>     Runtime PM disabled, clock forced on.

> and the clock is enabled all the time (verified by looking at the clock
> registers)?

That's very SH specific and doesn't apply in the general case (I would
not be surprised if future SH updates broke it...).

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