linux-kernel - RE: [PATCH 25/29] drivers/spi/spi-sirf.c: simplify use of devm_ioremap

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Date:	Wed, 14 Aug 2013 09:16:22 +0000
From:	Barry Song <Barry.Song@....com>
To:	Julia Lawall <Julia.Lawall@...6.fr>
CC:	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
	"Mark Brown" <broonie@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	DL-SHA-WorkGroupLinux <DL-SHA-WorkGroupLinux@...ernal.csr.com>
Subject: RE: [PATCH 25/29] drivers/spi/spi-sirf.c: simplify use of
 devm_ioremap_resource

> -----Original Message-----
> From: Julia Lawall [mailto:Julia.Lawall@...6.fr]
> Sent: Wednesday, August 14, 2013 5:11 PM
> To: Barry Song
> Cc: kernel-janitors@...r.kernel.org; Mark Brown;
> linux-arm-kernel@...ts.infradead.org; linux-spi@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Subject: [PATCH 25/29] drivers/spi/spi-sirf.c: simplify use of
> devm_ioremap_resource
> 
> From: Julia Lawall <Julia.Lawall@...6.fr>
> 
> Remove unneeded error handling on the result of a call to
> platform_get_resource when the value is passed to devm_ioremap_resource.
> 
> Move the call to platform_get_resource adjacent to the call to
> devm_ioremap_resource to make the connection between them more clear.
> 
> A simplified version of the semantic patch that makes this change is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> expression pdev,res,n,e,e1;
> expression ret != 0;
> identifier l;
> @@
> 
> - res = platform_get_resource(pdev, IORESOURCE_MEM, n);
>   ... when != res
> - if (res == NULL) { ... \(goto l;\|return ret;\) }
>   ... when != res
> + res = platform_get_resource(pdev, IORESOURCE_MEM, n);
>   e = devm_ioremap_resource(e1, res);
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

Acked-by: Barry Song <Baohua.Song@....com>

> 
> ---
>  drivers/spi/spi-sirf.c |    7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
 


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