linux-kernel - Re: [PATCH 01/28] media: cec: ch7322: drop of_match

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Message-ID: <b83d6b81-c4ec-4fb8-b626-84af80d1c4a3@roeck-us.net>
Date:   Mon, 13 Mar 2023 15:01:40 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Joe Tessler <jrt@...gle.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Michael Tretter <m.tretter@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        Rui Miguel Silva <rmfrfs@...il.com>,
        Wenyou Yang <wenyou.yang@...rochip.com>,
        Bin Liu <bin.liu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Minghsiu Tsai <minghsiu.tsai@...iatek.com>,
        Houlong Wei <houlong.wei@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Andrzej Pietrasiewicz <andrzejtp2010@...il.com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Patrice Chotard <patrice.chotard@...s.st.com>,
        Yong Deng <yong.deng@...ewell.com>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        "Lad, Prabhakar" <prabhakar.csengg@...il.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Sean Young <sean@...s.org>, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH 01/28] media: cec: ch7322: drop of_match_ptr for ID table

On Sun, Mar 12, 2023 at 02:12:51PM +0100, Krzysztof Kozlowski wrote:
> The driver can match only via the DT table so the table should be always
> used and the of_match_ptr does not have any sense (this also allows ACPI
> matching via PRP0001, even though it might not be relevant here).
> 
>   drivers/media/cec/i2c/ch7322.c:583:34: error: ‘ch7322_of_match’ defined but not used [-Werror=unused-const-variable=]
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

FWIW: There is also
https://patches.linaro.org/project/linux-media/patch/20230215214724.3798917-1-linux@roeck-us.net/

The lack of ACPI support is a real problem and very relevant.

Guenter

> ---
>  drivers/media/cec/i2c/ch7322.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/cec/i2c/ch7322.c b/drivers/media/cec/i2c/ch7322.c
> index 34fad7123704..3c6e6496a001 100644
> --- a/drivers/media/cec/i2c/ch7322.c
> +++ b/drivers/media/cec/i2c/ch7322.c
> @@ -589,7 +589,7 @@ MODULE_DEVICE_TABLE(of, ch7322_of_match);
>  static struct i2c_driver ch7322_i2c_driver = {
>  	.driver = {
>  		.name = "ch7322",
> -		.of_match_table = of_match_ptr(ch7322_of_match),
> +		.of_match_table = ch7322_of_match,
>  	},
>  	.probe_new	= ch7322_probe,
>  	.remove		= ch7322_remove,