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Subject: Re: [PATCH] media: i2c/Kconfig: Select FWNODE for OV772x sensor
To:     Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
        Sakari Ailus <sakari.ailus@linux.intel.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Jacopo Mondi <jacopo+renesas@jmondi.org>,
        linux-media@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org,
        Biju Das <biju.das.jz@bp.renesas.com>,
        Prabhakar <prabhakar.csengg@gmail.com>
References: <20210120090148.30598-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Reply-To: kieran.bingham+renesas@ideasonboard.com
From:   Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Organization: Ideas on Board
Message-ID: <a1c42817-e2e4-b96a-c494-742808443f6b@ideasonboard.com>
Date:   Wed, 20 Jan 2021 10:17:14 +0000
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Hi Lad,

On 20/01/2021 09:01, Lad Prabhakar wrote:
> Fix OV772x build breakage by selecting V4L2_FWNODE config:
> 
> ia64-linux-ld: drivers/media/i2c/ov772x.o: in function `ov772x_probe':
> ov772x.c:(.text+0x1ee2): undefined reference to `v4l2_fwnode_endpoint_alloc_parse'
> ia64-linux-ld: ov772x.c:(.text+0x1f12): undefined reference to `v4l2_fwnode_endpoint_free'
> ia64-linux-ld: ov772x.c:(.text+0x2212): undefined reference to `v4l2_fwnode_endpoint_alloc_parse'
> 
> Fixes: 8a10b4e3601e ("media: i2c: ov772x: Parse endpoint properties")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

I see this driver uses subdev API too.

Should the driver also select VIDEO_V4L2_SUBDEV_API?

Or is that covered sufficiently already on any platforms that would use
the driver?

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

> ---
>  drivers/media/i2c/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
> index eddb10220953..bb1b5a340431 100644
> --- a/drivers/media/i2c/Kconfig
> +++ b/drivers/media/i2c/Kconfig
> @@ -1013,6 +1013,7 @@ config VIDEO_OV772X
>  	tristate "OmniVision OV772x sensor support"
>  	depends on I2C && VIDEO_V4L2
>  	select REGMAP_SCCB
> +	select V4L2_FWNODE
>  	help
>  	  This is a Video4Linux2 sensor driver for the OmniVision
>  	  OV772x camera.
>