linux-kernel - Re: [PATCH v2 2/2] media: i2c: add support for ov4689

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Date:   Thu, 15 Sep 2022 23:40:00 +0300
From:   Mikhail Rudenko <mike.rudenko@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Jacopo Mondi <jacopo@...ndi.org>,
        Shawn Tu <shawnx.tu@...el.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Daniel Scally <djrscally@...il.com>,
        Christian Hemp <c.hemp@...tec.de>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Marek Vasut <marex@...x.de>, linux-media@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] media: i2c: add support for ov4689


Hi Krzysztof,

On 2022-09-12 at 12:56 +02, Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> On 11/09/2022 22:01, Mikhail Rudenko wrote:
>> +static const struct i2c_device_id ov4689_id[] = {
>> +	{ "ov4689", 0 },
>> +	{},
>> +};
>> +MODULE_DEVICE_TABLE(i2c, ov4689_id);
>> +
>> +static const struct of_device_id ov4689_of_match[] = {
>> +	{ .compatible = "ovti,ov4689" },
>> +	{},
>> +};
>> +MODULE_DEVICE_TABLE(of, ov4689_of_match);
>> +
>> +static struct i2c_driver ov4689_i2c_driver = {
>> +	.driver = {
>> +		.name = "ov4689",
>> +		.pm = &ov4689_pm_ops,
>> +		.of_match_table = of_match_ptr(ov4689_of_match),
>
> of_match_ptr is usually paired with maybe_unused, otherwise you will
> have compile test warnings.

I see. I think we could also use `#if IS_ENABLED(CONFIG_OF)` around
`ov4689_of_match` and the corresponding `MODULE_DEVICE_TABLE`. Is it
appropriate here?

>> +	},
>> +	.probe = ov4689_probe,
>> +	.remove	= ov4689_remove,
>> +	.id_table = ov4689_id,
>> +};
>> +
>> +module_i2c_driver(ov4689_i2c_driver);
>> +
>> +MODULE_DESCRIPTION("OmniVision ov4689 sensor driver");
>> +MODULE_LICENSE("GPL");
>
>
> Best regards,
> Krzysztof


--
Best regards,
Mikhail Rudenko