linux-kernel - Re: [PATCH 2/3] [media] v4l: rcar

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Date:   Fri, 18 Nov 2016 20:36:26 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Kieran Bingham <kieran+renesas@...uared.org.uk>,
        Simon Horman <horms+renesas@...ge.net.au>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] [media] v4l: rcar_fdp1: add FCP dependency

On Friday, November 18, 2016 6:08:01 PM CET Geert Uytterhoeven wrote:
> > diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> > index 3c5a0b6b23a9..cd0cab6e0e31 100644
> > --- a/drivers/media/platform/Kconfig
> > +++ b/drivers/media/platform/Kconfig
> > @@ -311,6 +311,7 @@ config VIDEO_RENESAS_FDP1
> >         tristate "Renesas Fine Display Processor"
> >         depends on VIDEO_DEV && VIDEO_V4L2 && HAS_DMA
> >         depends on ARCH_SHMOBILE || COMPILE_TEST
> > +       depends on (!ARCH_RENESAS && !VIDEO_RENESAS_FCP) || VIDEO_RENESAS_FCP
> 
> Which tree and config is this? I don't have fdp1_pm_runtime_resume in my
> renesas-drivers tree.
> 
> Why are the dummies for !CONFIG_VIDEO_RENESAS_FCP in include/media/rcar-fcp.h
> not working?

Oops, I forgot to write a proper changelog.

Commit 4710b752e029 ("[media] v4l: Add Renesas R-Car FDP1 Driver") in the
v4l-dvb tree adds CONFIG_VIDEO_RENESAS_FDP1.

It calls into the FCP driver, but when there is no dependency, FCP might
be a module while FDP1 is built-in.

We have the same logic in VIDEO_RENESAS_VSP1, which also depends on
FCP not being a module when it is built-in itself.

	Arnd