Re: [PATCH 2/29] video: mxsfb: simplify use of devm_ioremap_resource

Tomi Valkeinen
2013-08-30T07:51:48Z

[-- Attachment #1: Type: text/plain, Size: 1991 bytes --]

On 14/08/13 12:11, Julia Lawall wrote:
> From: Julia Lawall <Julia.Lawall@lip6.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@lip6.fr>
>
> ---
> drivers/video/mxsfb.c | 7 +------
> 1 file changed, 1 insertion(+), 6 deletions(-)
>
> diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c
> index c2d3514..d250ed0 100644
> --- a/drivers/video/mxsfb.c
> +++ b/drivers/video/mxsfb.c
> @@ -855,12 +855,6 @@ static int mxsfb_probe(struct platform_device *pdev)
> if (of_id)
> pdev->id_entry = of_id->data;
>
> - res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - if (!res) {
> - dev_err(&pdev->dev, "Cannot get memory IO resource\n");
> - return -ENODEV;
> - }
> -
> fb_info = framebuffer_alloc(sizeof(struct mxsfb_info), &pdev->dev);
> if (!fb_info) {
> dev_err(&pdev->dev, "Failed to allocate fbdev\n");
> @@ -869,6 +863,7 @@ static int mxsfb_probe(struct platform_device *pdev)
>
> host = to_imxfb_host(fb_info);
>
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> host->base = devm_ioremap_resource(&pdev->dev, res);
> if (IS_ERR(host->base)) {
> ret = PTR_ERR(host->base);
>

Thanks, queued for 3.12.

Tomi

[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 901 bytes --]