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

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Message-ID: <CAMuHMdVf_4TPf6YKuHLztrgFKWHTeoVi5agesO6tFU5h_56DOA@mail.gmail.com>
Date:	Tue, 11 Mar 2014 14:35:15 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Mark Brown <broonie@...nel.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

Hi Mark,

On Tue, Mar 11, 2014 at 2:26 PM, Mark Brown <broonie@...nel.org> wrote:
> 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...).

Note that this is from drivers/base/power/clock_ops.c

So what should I do instead?

Thanks!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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