linux-kernel - Re: [PATCH] net: ethernet: freescale: use devm_ioremap

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Date:	Tue, 14 May 2013 09:09:13 +0200
From:	Laurent Navet <laurent.navet@...il.com>
To:	Frank Li <lznuaa@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	"Frank.Li@...escale.com" <Frank.Li@...escale.com>,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Shawn Guo <shawn.guo@...aro.org>, joe@...ches.com,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: ethernet: freescale: use devm_ioremap_resource()

>> --- a/drivers/net/ethernet/freescale/fec_main.c
>> +++ b/drivers/net/ethernet/freescale/fec_main.c
>> @@ -1843,8 +1843,6 @@ fec_probe(struct platform_device *pdev)
>>                 pdev->id_entry = of_id->data;
>>
>>         r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> -       if (!r)
>> -               return -ENXIO;
>>
>
> why remove this check?

it's already checked in devm_ioremap_resource in a better way,

void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res)
 {
...
         if (!res || resource_type(res) != IORESOURCE_MEM) {
                 dev_err(dev, "invalid resource\n");
                 return ERR_PTR(-EINVAL);
         }
...

Laurent.
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