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[PATCH] pinctrl:Convert the composition of devm_request_mem_region and devm_ioremap to a single call

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  [PATCH] pinctrl:Convert the composition of devm_request_mem_region and devm_ioremap to a single call Sanjeev Sharma <sanjeev_sharma@mentor.com> - 2015-10-30 09:00 +0100
    Re: [PATCH] pinctrl:Convert the composition of devm_request_mem_region  and devm_ioremap to a single call Linus Walleij <linus.walleij@linaro.org> - 2015-10-30 21:00 +0100

#1259284 — [PATCH] pinctrl:Convert the composition of devm_request_mem_region and devm_ioremap to a single call

Use devm_ioremap_resource() in order to make the code simpler,
and remove redundant return value check of platform_get_resource()
because this value is alreadytaken care by devm_ioremap_resource()

Signed-off-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>
---
 drivers/pinctrl/pinctrl-single.c | 21 +++------------------
 1 file changed, 3 insertions(+), 18 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index ef04b96..905cc0a 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -1865,24 +1865,9 @@ static int pcs_probe(struct platform_device *pdev)
 						  "pinctrl-single,bit-per-mux");
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(pcs->dev, "could not get resource\n");
-		return -ENODEV;
-	}
-
-	pcs->res = devm_request_mem_region(pcs->dev, res->start,
-			resource_size(res), DRIVER_NAME);
-	if (!pcs->res) {
-		dev_err(pcs->dev, "could not get mem_region\n");
-		return -EBUSY;
-	}
-
-	pcs->size = resource_size(pcs->res);
-	pcs->base = devm_ioremap(pcs->dev, pcs->res->start, pcs->size);
-	if (!pcs->base) {
-		dev_err(pcs->dev, "could not ioremap\n");
-		return -ENODEV;
-	}
+	pcs->base = devm_ioremap_resource(pcs->dev, res);
+	if (IS_ERR(pcs->base))
+		return PTR_ERR(pcs->base);
 
 	INIT_RADIX_TREE(&pcs->pgtree, GFP_KERNEL);
 	INIT_RADIX_TREE(&pcs->ftree, GFP_KERNEL);
-- 
1.7.11.7

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#1259758 — Re: [PATCH] pinctrl:Convert the composition of devm_request_mem_region and devm_ioremap to a single call

Please run posts like this by the maintainers. Tony Lindgren is one
user, Haojian is another.

Your top-poster,
Linus Walleij

On Fri, Oct 30, 2015 at 8:51 AM, Sanjeev Sharma
<sanjeev_sharma@mentor.com> wrote:
> Use devm_ioremap_resource() in order to make the code simpler,
> and remove redundant return value check of platform_get_resource()
> because this value is alreadytaken care by devm_ioremap_resource()
>
> Signed-off-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>
> ---
>  drivers/pinctrl/pinctrl-single.c | 21 +++------------------
>  1 file changed, 3 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
> index ef04b96..905cc0a 100644
> --- a/drivers/pinctrl/pinctrl-single.c
> +++ b/drivers/pinctrl/pinctrl-single.c
> @@ -1865,24 +1865,9 @@ static int pcs_probe(struct platform_device *pdev)
>                                                   "pinctrl-single,bit-per-mux");
>
>         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -       if (!res) {
> -               dev_err(pcs->dev, "could not get resource\n");
> -               return -ENODEV;
> -       }
> -
> -       pcs->res = devm_request_mem_region(pcs->dev, res->start,
> -                       resource_size(res), DRIVER_NAME);
> -       if (!pcs->res) {
> -               dev_err(pcs->dev, "could not get mem_region\n");
> -               return -EBUSY;
> -       }
> -
> -       pcs->size = resource_size(pcs->res);
> -       pcs->base = devm_ioremap(pcs->dev, pcs->res->start, pcs->size);
> -       if (!pcs->base) {
> -               dev_err(pcs->dev, "could not ioremap\n");
> -               return -ENODEV;
> -       }
> +       pcs->base = devm_ioremap_resource(pcs->dev, res);
> +       if (IS_ERR(pcs->base))
> +               return PTR_ERR(pcs->base);
>
>         INIT_RADIX_TREE(&pcs->pgtree, GFP_KERNEL);
>         INIT_RADIX_TREE(&pcs->ftree, GFP_KERNEL);
> --
> 1.7.11.7
>
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