RE: [PATCH 25/29] drivers/spi/spi-sirf.c: simplify use ofdevm_ioremap_resource

From: Barry Song
Date: Wed Aug 14 2013 - 06:21:00 EST


> -----Original Message-----
> From: Julia Lawall [mailto:Julia.Lawall@xxxxxxx]
> Sent: Wednesday, August 14, 2013 5:11 PM
> To: Barry Song
> Cc: kernel-janitors@xxxxxxxxxxxxxxx; Mark Brown;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-spi@xxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx
> Subject: [PATCH 25/29] drivers/spi/spi-sirf.c: simplify use of
> devm_ioremap_resource
>
> From: Julia Lawall <Julia.Lawall@xxxxxxx>
>
> 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@xxxxxxx>

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

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



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