linux-kernel - Re: [PATCH v3 13/24] platform: add video-multiplexer subdevice driver

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Message-ID: <CABxcv=n1z7OwOctm_qmT8oBWSGK4tyvKBY6fWUOSZHfW1x=QUQ@mail.gmail.com>
Date:   Tue, 24 Jan 2017 09:44:12 -0300
From:   Javier Martinez Canillas <javier@...hile0.org>
To:     Steve Longerbeam <slongerbeam@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Russell King <linux@...linux.org.uk>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>, nick@...anahar.org,
        Markus Heiser <markus.heiser@...marit.de>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Benoit Parrot <bparrot@...com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Arnd Bergmann <arnd@...db.de>, sudipm.mukherjee@...il.com,
        minghsiu.tsai@...iatek.com, tiffany.lin@...iatek.com,
        Jean-Christophe Trotin <jean-christophe.trotin@...com>,
        horms+renesas@...ge.net.au, niklas.soderlund+renesas@...natech.se,
        robert.jarzmik@...e.fr, songjun.wu@...rochip.com,
        andrew-ct.chen@...iatek.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Steve Longerbeam <steve_longerbeam@...tor.com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Linux Kernel <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>
Subject: Re: [PATCH v3 13/24] platform: add video-multiplexer subdevice driver

Hello Steve,

On Fri, Jan 6, 2017 at 11:11 PM, Steve Longerbeam <slongerbeam@...il.com> wrote:
> From: Philipp Zabel <p.zabel@...gutronix.de>

[snip]

>
> +config VIDEO_MULTIPLEXER
> +       tristate "Video Multiplexer"
> +       depends on VIDEO_V4L2_SUBDEV_API && MEDIA_CONTROLLER

The driver can be build as a module...

> +
> +static const struct of_device_id vidsw_dt_ids[] = {
> +       { .compatible = "video-multiplexer", },
> +       { /* sentinel */ }
> +};
> +

... so you need a MODULE_DEVICE_TABLE(of, vidsw_dt_ids) here or
otherwise module autoloading won't work.

Best regards,
Javier