linux-kernel - Re: [PATCH] PCI: dwc: dra7xx: fix error return code in dra7xx_pcie

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Message-ID: <6de244a4-8efb-95c4-ff4b-ab9221ef5751@embeddedor.com>
Date:   Tue, 22 Aug 2017 15:39:38 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-omap@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: dwc: dra7xx: fix error return code in
 dra7xx_pcie_probe()

Hi Bjorn,

On 08/22/2017 03:37 PM, Bjorn Helgaas wrote:
> On Wed, Aug 09, 2017 at 11:16:03AM -0500, Gustavo A. R. Silva wrote:
>> platform_get_irq() returns an error code, but the pci-dra7xx driver
>> ignores it and always returns -EINVAL. This is not correct and,
>> prevents -EPROBE_DEFER from being propagated properly.
>>
>> Print and propagate the return value of platform_get_irq on failure.
>>
>> This issue was detected with the help of Coccinelle.
>>
>> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
>
> Applied with Kishon's ack to pci/host-dra7xx for v4.14, thanks!
>

Glad to help. :)

>> ---
>>  drivers/pci/dwc/pci-dra7xx.c | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
>> index f2fc5f4..f58e1b4 100644
>> --- a/drivers/pci/dwc/pci-dra7xx.c
>> +++ b/drivers/pci/dwc/pci-dra7xx.c
>> @@ -616,8 +616,8 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
>>
>>  	irq = platform_get_irq(pdev, 0);
>>  	if (irq < 0) {
>> -		dev_err(dev, "missing IRQ resource\n");
>> -		return -EINVAL;
>> +		dev_err(dev, "missing IRQ resource: %d\n", irq);
>> +		return irq;
>>  	}
>>
>>  	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ti_conf");
>> --
>> 2.5.0
>>

-- 
Gustavo A. R. Silva