linux-kernel - Re: [PATCH] thermal: tegra: mark PM functions __maybe

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Date:	Tue, 19 Apr 2016 14:43:19 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	Wei Ni <wni@...dia.com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Eduardo Valentin <edubezval@...il.com>,
	Zhang Rui <rui.zhang@...el.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Jon Hunter <jonathanh@...dia.com>, linux-pm@...r.kernel.org,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] thermal: tegra: mark PM functions __maybe_unused

On Tue, Apr 19, 2016 at 10:35:55AM +0800, Wei Ni wrote:
> 
> 
> On 2016年04月18日 15:15, Thierry Reding wrote:
> > * PGP Signed by an unknown key
> > 
> > On Sat, Apr 16, 2016 at 10:19:33PM +0200, Arnd Bergmann wrote:
> >> After the PM support has been added to this driver, we get
> >> a harmless warning when that support is disabled at compile
> >> time:
> >>
> >> drivers/thermal/tegra/soctherm.c:641:12: error: 'soctherm_resume' defined but not used [-Werror=unused-function]
> >>  static int soctherm_resume(struct device *dev)
> >>
> >> This marks the two PM functions as __maybe_unused to shut up
> >> the warning. This is preferred over adding an #ifdef around
> >> them, as it is harder to get wrong, and provides better
> >> compile-time coverage.
> >>
> >> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> >> Fixes: a134b4143b65 ("thermal: tegra: add PM support")
> >> ---
> >>  drivers/thermal/tegra/soctherm.c | 4 ++--
> >>  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > The need for this should go away when Jon's generic power domain series
> 
> Hi Thierry,
> Could you please show me the Jon's generic power domain series, so that I can
> verify it.

Here are the remaining patches from Jon's series:

	https://patchwork.ozlabs.org/patch/603285/
	https://patchwork.ozlabs.org/patch/603287/
	https://patchwork.ozlabs.org/patch/603284/

Thierry

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