linux-kernel - Re: [RFC 23/42] drivers/spi: don't check resource with devm_ioremap

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Message-ID: <518D2258.2090403@wwwdotorg.org>
Date:	Fri, 10 May 2013 10:37:44 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Wolfram Sang <wsa@...-dreams.de>
CC:	linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Ben Dooks <ben-linux@...ff.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Barry Song <baohua.song@....com>,
	spi-devel-general@...ts.sourceforge.net,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: Re: [RFC 23/42] drivers/spi: don't check resource with devm_ioremap_resource

On 05/10/2013 02:17 AM, Wolfram Sang wrote:
> devm_ioremap_resource does sanity checks on the given resource. No need to
> duplicate this in the driver.

> diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c

> -	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!r) {
> -		dev_err(&pdev->dev, "No IO memory resource\n");
> -		ret = -ENODEV;
> -		goto exit_free_master;
> -	}
>  	tspi->phys = r->start;
> +	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);

The tspi->phy assignment is broken there now.

> diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c

> -	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!r) {
> -		dev_err(&pdev->dev, "No IO memory resource\n");
> -		ret = -ENODEV;
> -		goto exit_free_master;
> -	}
>  	tspi->phys = r->start;
> +	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);

Same here.

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