linux-kernel - Re: [PATCH] pinctrl:Convert the composition of devm_request_mem_region and devm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 30 Oct 2015 20:53:58 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Sanjeev Sharma <sanjeev_sharma@...tor.com>,
	Tony Lindgren <tony@...mide.com>,
	Haojian Zhuang <haojian.zhuang@...aro.org>
Cc:	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: 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@...tor.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@...tor.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
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/