linux-kernel - RE: [PATCH V2 2/8] clk: imx93: guard imx93_clk_of_match with CONFIG

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Message-ID: <DU0PR04MB941789A6D3600233D878BBCB88689@DU0PR04MB9417.eurprd04.prod.outlook.com>
Date:   Mon, 15 Aug 2022 08:19:52 +0000
From:   Peng Fan <peng.fan@....com>
To:     Abel Vesa <abel.vesa@...aro.org>,
        "Peng Fan (OSS)" <peng.fan@....nxp.com>,
        Stephen Boyd <sboyd@...nel.org>
CC:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "abelvesa@...nel.org" <abelvesa@...nel.org>,
        "mturquette@...libre.com" <mturquette@...libre.com>,
        "sboyd@...nel.org" <sboyd@...nel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        kernel test robot <lkp@...el.com>
Subject: RE: [PATCH V2 2/8] clk: imx93: guard imx93_clk_of_match with
 CONFIG_OF

> Subject: Re: [PATCH V2 2/8] clk: imx93: guard imx93_clk_of_match with
> CONFIG_OF
> 
> On 22-08-15 09:30:33, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@....com>
> >
> > There is build warning when CONFIG_OF is not selected.
> > >> drivers/clk/imx/clk-imx93.c:324:34: warning: 'imx93_clk_of_match'
> > >> defined but not used [-Wunused-const-variable=]
> >      324 | static const struct of_device_id imx93_clk_of_match[] = {
> >          |                                  ^~~~~~~~~~~~~~~~~~
> >
> > Use CONFIG_OF to guard imx93_clk_of_match to avoid build warning.
> >
> > Fixes: 24defbe194b6 ("clk: imx: add i.MX93 clk")
> > Reported-by: kernel test robot <lkp@...el.com>
> > Signed-off-by: Peng Fan <peng.fan@....com>
> > ---
> >  drivers/clk/imx/clk-imx93.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/clk/imx/clk-imx93.c b/drivers/clk/imx/clk-imx93.c
> > index f5c9fa40491c..5099048b7916 100644
> > --- a/drivers/clk/imx/clk-imx93.c
> > +++ b/drivers/clk/imx/clk-imx93.c
> > @@ -321,11 +321,13 @@ static int imx93_clocks_probe(struct
> platform_device *pdev)
> >  	return ret;
> >  }
> >
> > +#ifdef CONFIG_OF
> 
> Hmm, I'm not sure if we should do this or rather should we make this driver
> depend somehow on CONFIG_OF in Kconfig.
> 
> Looking at the other i.MX clock drivers, it would seem we need this for all
> them too.

No. It is i.MX93 use of_match_ptr, I could drop it as i.MX8M.

Thanks,
Peng.

> 
> I fairly OK with this, but maybe Stephen suggests something different.
> 
> Reviewed-by: Abel Vesa <abel.vesa@....com>
> 
> >  static const struct of_device_id imx93_clk_of_match[] = {
> >  	{ .compatible = "fsl,imx93-ccm" },
> >  	{ /* Sentinel */ },
> >  };
> >  MODULE_DEVICE_TABLE(of, imx93_clk_of_match);
> > +#endif
> >
> >  static struct platform_driver imx93_clk_driver = {
> >  	.probe = imx93_clocks_probe,
> > --
> > 2.37.1
> >