linux-kernel - Re: Re: [PATCH] drivers: iio: remove dead code in at91_adc

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Date:   Fri, 10 Mar 2023 17:41:24 +0800 (GMT+08:00)
From:   慕冬亮 <dzm91@...t.edu.cn>
To:     claudiu.beznea@...rochip.com
Cc:     chengziqiu@...t.edu.cn, eugen.hristev@...labora.com,
        jic23@...nel.org, lars@...afoo.de, nicolas.ferre@...rochip.com,
        alexandre.belloni@...tlin.com, linux-iio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: Re: [PATCH] drivers: iio: remove dead code in at91_adc_probe




> -----原始邮件-----
> 发件人: Claudiu.Beznea@...rochip.com
> 发送时间: 2023-03-10 17:14:56 (星期五)
> 收件人: chengziqiu@...t.edu.cn, eugen.hristev@...labora.com, jic23@...nel.org, lars@...afoo.de, Nicolas.Ferre@...rochip.com, alexandre.belloni@...tlin.com
> 抄送: dzm91@...t.edu.cn, linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
> 主题: Re: [PATCH] drivers: iio: remove dead code in at91_adc_probe
> 
> On 09.03.2023 17:05, Cheng Ziqiu wrote:
> >>From the comment of platform_get_irq, it only returns non-zero IRQ
> > number and negative error number, other than zero.
> > 
> > Fix this by removing the if condition.
> > 
> > Signed-off-by: Cheng Ziqiu <chengziqiu@...t.edu.cn>
> 
> I see From and 1st SoB matches but
> 
> > Signed-off-by: Dongliang Mu <dzm91@...t.edu.cn>
> 
> this SoB seems extra. What is the contribution of Dongliang Mu to this patch?

I reviewed this patch locally since this student is the first time to submit patch to the kernel mailing list.

In my lab, I encourage all students to fix kernel issues. However, their patches should be reviewed by me first before sending the mailing list.

> 
> > ---
> >  drivers/iio/adc/at91-sama5d2_adc.c | 6 +-----
> >  1 file changed, 1 insertion(+), 5 deletions(-)
> > 
> > diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
> > index 50d02e5fc6fc..168399092590 100644
> > --- a/drivers/iio/adc/at91-sama5d2_adc.c
> > +++ b/drivers/iio/adc/at91-sama5d2_adc.c
> > @@ -2400,12 +2400,8 @@ static int at91_adc_probe(struct platform_device *pdev)
> >         st->dma_st.phys_addr = res->start;
> > 
> >         st->irq = platform_get_irq(pdev, 0);
> > -       if (st->irq <= 0) {
> > -               if (!st->irq)
> > -                       st->irq = -ENXIO;
> > -
> > +       if (st->irq < 0)
> >                 return st->irq;
> > -       }
> > 
> >         st->per_clk = devm_clk_get(&pdev->dev, "adc_clk");
> >         if (IS_ERR(st->per_clk))
> > --
> > 2.34.1
> > 
> 


--
Best regards,
Dongliang Mu