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From:   Jiasheng Jiang <jiasheng@iscas.ac.cn>
To:     andy.shevchenko@gmail.com
Cc:     oe-kbuild-all@lists.linux.dev, linus.walleij@linaro.org,
        brgl@bgdev.pl, palmer@dabbelt.com, paul.walmsley@sifive.com,
        linux-gpio@vger.kernel.org, linux-riscv@lists.infradead.org,
        linux-kernel@vger.kernel.org, Jiasheng Jiang <jiasheng@iscas.ac.cn>
Subject: Re: [PATCH v3] gpio: sifive: Add missing check for platform_get_irq
Date:   Tue,  6 Jun 2023 10:21:21 +0800
Message-Id: <20230606022121.37914-1-jiasheng@iscas.ac.cn>
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On Mon, 5 Jun 2023 17:15:53 +0800 Andy Shevchenko wrote:
> On Mon, Jun 5, 2023 at 12:13 PM Andy Shevchenko
> <andy.shevchenko@gmail.com> wrote:
>>
>> On Mon, Jun 5, 2023 at 4:49 AM Jiasheng Jiang <jiasheng@iscas.ac.cn> wrote:
>> >
>> > Add the missing check for platform_get_irq() and return error code
>> > if it fails.
>>
>> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> 
> Actually, the change is functional and now the wrong IRQ numbering in
> the DT will fail the ->probe(). This needs an additional explanation
> in the commit message why it's not a problem.
> 
>> > -       for (i = 0; i < ngpio; i++)
>> > -               chip->irq_number[i] = platform_get_irq(pdev, i);
>> > +       for (i = 0; i < ngpio; i++) {
>> > +               ret = platform_get_irq(pdev, i);
>> > +               if (ret < 0)
>> > +                       return ret;
>> > +               chip->irq_number[i] = ret;
>> > +       }

I will submit a new v3 adding the explanation.

Thanks,
Jiasheng