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Date:   Tue, 29 Nov 2022 23:24:53 +0200
From:   Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To:     Paul Cercueil <paul@crapouillou.net>
Cc:     David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
        dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
        linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH v2 17/26] drm: rcar-du: Remove #ifdef guards for PM
 related functions
Message-ID: <Y4Z4pSFrVL9D1gnI@pendragon.ideasonboard.com>
References: <20221129191733.137897-1-paul@crapouillou.net>
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 <20221129191942.138244-4-paul@crapouillou.net>
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Hi Paul,

On Tue, Nov 29, 2022 at 09:05:49PM +0000, Paul Cercueil wrote:
> Le mardi 29 novembre 2022 à 21:43 +0200, Laurent Pinchart a écrit :
> > On Tue, Nov 29, 2022 at 07:19:33PM +0000, Paul Cercueil wrote:
> > > Use the DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle
> > > the .suspend/.resume callbacks.
> > > 
> > > These macros allow the suspend and resume functions to be automatically
> > > dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> > > to use #ifdef guards.
> > > 
> > > This has the advantage of always compiling these functions in,
> > > independently of any Kconfig option. Thanks to that, bugs and other
> > > regressions are subsequently easier to catch.
> > > 
> > > Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> > > Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> > 
> > Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> > 
> > Will you get this whole series merged in one go in drm-misc, or do you
> > expect me to take this patch in my tree ? I'd prefer the first option if
> > possible (less work for me :-)).
> 
> I actually answered that in my cover letter ;)

Oops. I read until "V2" and didn't notice the last paragraph, sorry.

> However I assumed it had to go through drm-next, if you think it can go
> through drm-misc-next, I can apply it myself.

This seems like a good candidate for drm-misc to me.

> > > ---
> > > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > > Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> > > Cc: linux-renesas-soc@vger.kernel.org
> > > ---
> > >  drivers/gpu/drm/rcar-du/rcar_du_drv.c | 9 +++------
> > >  1 file changed, 3 insertions(+), 6 deletions(-)
> > > 
> > > diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> > > b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> > > index d003e8d9e7a2..eeec1e02446f 100644
> > > --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> > > +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> > > @@ -599,7 +599,6 @@ static const struct drm_driver rcar_du_driver =
> > > {
> > >   * Power management
> > >   */
> > >  
> > > -#ifdef CONFIG_PM_SLEEP
> > >  static int rcar_du_pm_suspend(struct device *dev)
> > >  {
> > >         struct rcar_du_device *rcdu = dev_get_drvdata(dev);
> > > @@ -613,11 +612,9 @@ static int rcar_du_pm_resume(struct device
> > > *dev)
> > >  
> > >         return drm_mode_config_helper_resume(&rcdu->ddev);
> > >  }
> > > -#endif
> > >  
> > > -static const struct dev_pm_ops rcar_du_pm_ops = {
> > > -       SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend,
> > > rcar_du_pm_resume)
> > > -};
> > > +static DEFINE_SIMPLE_DEV_PM_OPS(rcar_du_pm_ops,
> > > +                               rcar_du_pm_suspend,
> > > rcar_du_pm_resume);
> > >  
> > >  /* ---------------------------------------------------------------
> > > --------------
> > >   * Platform driver
> > > @@ -712,7 +709,7 @@ static struct platform_driver
> > > rcar_du_platform_driver = {
> > >         .shutdown       = rcar_du_shutdown,
> > >         .driver         = {
> > >                 .name   = "rcar-du",
> > > -               .pm     = &rcar_du_pm_ops,
> > > +               .pm     = pm_sleep_ptr(&rcar_du_pm_ops),
> > >                 .of_match_table = rcar_du_of_table,
> > >         },
> > >  };

-- 
Regards,

Laurent Pinchart