linux-kernel - Re: [PATCH v6 18/40] net: cirrus: add DT support for Cirrus EP93xx

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Message-ID: <ZXn6ebDA0Eo4G1Aa@smile.fi.intel.com>
Date:   Wed, 13 Dec 2023 20:39:53 +0200
From:   Andy Shevchenko <andriy.shevchenko@...el.com>
To:     Nikita Shubin <nikita.shubin@...uefel.me>
Cc:     Hartley Sweeten <hsweeten@...ionengravers.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH v6 18/40] net: cirrus: add DT support for Cirrus EP93xx

On Tue, Dec 12, 2023 at 11:20:35AM +0300, Nikita Shubin wrote:
> - add OF ID match table
> - get phy_id from the device tree, as part of mdio
> - copy_addr is now always used, as there is no SoC/board that aren't
> - dropped platform header

...

>  	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>  	irq = platform_get_irq(pdev, 0);
>  	if (!mem || irq < 0)
>  		return -ENXIO;

Strictly speaking these should be separated and different codes being retuned as
platform_get_irq() might return something different in some cases.

	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;

> +	base_addr = ioremap(mem->start, resource_size(mem));
> +	if (!base_addr)
> +		return dev_err_probe(&pdev->dev, -EIO, "Failed to ioremap ethernet registers\n");

Hmm... Why not devm_platform_ioremap_resource()?

-- 
With Best Regards,
Andy Shevchenko