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Subject: Re: [PATCH v2 4/5] PCI: uniphier: Add iATU register support
To:     Rob Herring <robh@kernel.org>
Cc:     Bjorn Helgaas <bhelgaas@google.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Jingoo Han <jingoohan1@gmail.com>,
        Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Masami Hiramatsu <masami.hiramatsu@linaro.org>,
        Jassi Brar <jaswinder.singh@linaro.org>
References: <1589536743-6684-1-git-send-email-hayashi.kunihiko@socionext.com>
 <1589536743-6684-5-git-send-email-hayashi.kunihiko@socionext.com>
 <20200601213215.GA1521885@bogus>
From:   Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Message-ID: <e6e7de73-6a89-b0e9-a9b0-de353c4e3218@socionext.com>
Date:   Tue, 2 Jun 2020 18:07:42 +0900
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Hi Rob,

On 2020/06/02 6:32, Rob Herring wrote:
> On Fri, May 15, 2020 at 06:59:02PM +0900, Kunihiko Hayashi wrote:
>> This gets iATU register area from reg property. In Synopsis DWC version
>> 4.80 or later, since iATU register area is separated from core register
>> area, this area is necessary to get from DT independently.
>>
>> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
>> ---
>>   drivers/pci/controller/dwc/pcie-uniphier.c | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>
>> diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
>> index a8dda39..493f105 100644
>> --- a/drivers/pci/controller/dwc/pcie-uniphier.c
>> +++ b/drivers/pci/controller/dwc/pcie-uniphier.c
>> @@ -447,6 +447,13 @@ static int uniphier_pcie_probe(struct platform_device *pdev)
>>   	if (IS_ERR(priv->pci.dbi_base))
>>   		return PTR_ERR(priv->pci.dbi_base);
>>   
>> +	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "atu");
>> +	if (res) {
>> +		priv->pci.atu_base = devm_pci_remap_cfg_resource(dev, res);
> 
> This isn't config space, so this function shouldn't be used.
> 
> Use devm_platform_ioremap_resource_byname().

Indeed. I'll replace with it.

>> +		if (IS_ERR(priv->pci.atu_base))
>> +			priv->pci.atu_base = NULL;
>> +	}
>> +
>>   	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "link");
>>   	priv->base = devm_ioremap_resource(dev, res);
> 
> Feel free to convert this one too.

This should be replaced as well.

Thank you,
  
---
Best Regards
Kunihiko Hayashi