netdev - Re: [PATCH net-next v2] net: gemini: Use devm_platform_get_and_ioremap

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Date:   Mon, 7 Jun 2021 09:05:08 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     Linus Walleij <linus.walleij@...aro.org>
CC:     linux-kernel <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        Hans Ulli Kroll <ulli.kroll@...glemail.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH net-next v2] net: gemini: Use
 devm_platform_get_and_ioremap_resource()

Hi,

On 2021/6/5 23:17, Linus Walleij wrote:
> On Sat, Jun 5, 2021 at 2:32 PM Yang Yingliang <yangyingliang@...wei.com> wrote:
>
>> Use devm_platform_get_and_ioremap_resource() to simplify
>> code.
>>
>> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
> (...)
>> -       dmares = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> -       gmacres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> Should you not also delete the local variables
> dmares and gmacres? I doubt they are used
> after this.
They are used to print message before returning gemini_ethernet_port_probe()
static int gemini_ethernet_port_probe(struct platform_device *pdev)
{
[...]
         netdev_info(netdev,
                     "irq %d, DMA @ 0x%pap, GMAC @ 0x%pap\n",
                     port->irq, &dmares->start,
                     &gmacres->start);
         return 0;

unprepare:
         clk_disable_unprepare(port->pclk);
         return ret;
}

Thanks,
Yang
>
> Yours,
> Linus Walleij
> .