linux-kernel - Re: [PATCH] staging:pci-mt7621: Use PTR_ERR_OR

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Date:   Mon, 13 Aug 2018 19:33:13 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     Sergio Paracuellos <sergio.paracuellos@...il.com>
CC:     Greg KH <gregkh@...uxfoundation.org>, NeilBrown <neil@...wn.name>,
        <peter.vernia@...il.com>, <oliver.huebers@....de>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging:pci-mt7621: Use PTR_ERR_OR_ZERO to replace the
 open code

On 2018/8/13 19:26, Sergio Paracuellos wrote:
> On Mon, Aug 13, 2018 at 12:54 PM, zhong jiang <zhongjiang@...wei.com> wrote:
>> PTR_ERR_OR_ZERO has implemented the if(IS_ERR(...)) + PTR_ERR, So
>> just replace them rather than duplicating its implement.
>>
>> Signed-off-by: zhong jiang <zhongjiang@...wei.com>
>> ---
>>  drivers/staging/mt7621-pci/pci-mt7621.c | 4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/staging/mt7621-pci/pci-mt7621.c
>> index a49e279..9a8ff1d 100644
>> --- a/drivers/staging/mt7621-pci/pci-mt7621.c
>> +++ b/drivers/staging/mt7621-pci/pci-mt7621.c
>> @@ -403,10 +403,8 @@ static int mt7621_pcie_parse_dt(struct mt7621_pcie *pcie)
>>         }
>>
>>         pcie->base = devm_ioremap_resource(dev, &regs);
>> -       if (IS_ERR(pcie->base))
>> -               return PTR_ERR(pcie->base);
>>
>> -       return 0;
>> +       return PTR_ERR_OR_ZERO(pcie->base);
>>  }
> Hi Zhong,
>
> Thanks for this. This driver is in the middle of cleanup and this
> function is not doing all the DT parse
> yet, so this patch looks good but after applying this series (if they
> work and are good enough to be applied)
> has no sense.
>
> See: http://driverdev.linuxdriverproject.org/pipermail/driverdev-devel/2018-August/124890.html
>
> Best regards,
>     Sergio Paracuellos
Thank you for let me know that.

Sincerely,
zhong jiang
>>  static int mt7621_pcie_request_resources(struct mt7621_pcie *pcie,
>> --
>> 1.7.12.4
>>
> .
>