From: Julia Lawall <julia.lawall@lip6.fr>
To: Markus Elfring <Markus.Elfring@web.de>
Cc: kernel-janitors@vger.kernel.org,
Michal Marek <michal.lkml@markovi.net>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Linus Walleij <linus.walleij@linaro.org>,
Nicolas Palix <nicolas.palix@imag.fr>,
linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
cocci@systeme.lip6.fr
Subject: Re: [Cocci] [PATCH] drivers: Inline code in devm_platform_ioremap_resource() from two functions
Date: Fri, 14 Jun 2019 11:27:47 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.20.1906141127030.9068@hadrien> (raw)
In-Reply-To: <032e347f-e575-c89c-fa62-473d52232735@web.de>
On Fri, 14 Jun 2019, Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Fri, 14 Jun 2019 11:05:33 +0200
>
> Two function calls were combined in this function implementation.
> Inline corresponding code so that extra error checks can be avoided here.
I don't see any point to this at all. By inlining the code, you have
created a clone, which will introduce extra work to maintain in the
future.
julia
>
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
> drivers/base/platform.c | 39 ++++++++++++++++++++++++++++++++++-----
> 1 file changed, 34 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/base/platform.c b/drivers/base/platform.c
> index 4d1729853d1a..baadca72f949 100644
> --- a/drivers/base/platform.c
> +++ b/drivers/base/platform.c
> @@ -80,8 +80,8 @@ struct resource *platform_get_resource(struct platform_device *dev,
> EXPORT_SYMBOL_GPL(platform_get_resource);
>
> /**
> - * devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
> - * device
> + * devm_platform_ioremap_resource
> + * Achieve devm_ioremap_resource() functionality for a platform device
> *
> * @pdev: platform device to use both for memory resource lookup as well as
> * resource management
> @@ -91,10 +91,39 @@ EXPORT_SYMBOL_GPL(platform_get_resource);
> void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
> unsigned int index)
> {
> - struct resource *res;
> + u32 i;
>
> - res = platform_get_resource(pdev, IORESOURCE_MEM, index);
> - return devm_ioremap_resource(&pdev->dev, res);
> + for (i = 0; i < pdev->num_resources; i++) {
> + struct resource *res = &pdev->resource[i];
> +
> + if (resource_type(res) == IORESOURCE_MEM && index-- == 0) {
> + struct device *dev = &pdev->dev;
> + resource_size_t size = resource_size(res);
> + void __iomem *dest;
> +
> + if (!devm_request_mem_region(dev,
> + res->start,
> + size,
> + dev_name(dev))) {
> + dev_err(dev,
> + "can't request region for resource %pR\n",
> + res);
> + return IOMEM_ERR_PTR(-EBUSY);
> + }
> +
> + dest = devm_ioremap(dev, res->start, size);
> + if (!dest) {
> + dev_err(dev,
> + "ioremap failed for resource %pR\n",
> + res);
> + devm_release_mem_region(dev, res->start, size);
> + dest = IOMEM_ERR_PTR(-ENOMEM);
> + }
> +
> + return dest;
> + }
> + }
> + return IOMEM_ERR_PTR(-EINVAL);
> }
> EXPORT_SYMBOL_GPL(devm_platform_ioremap_resource);
> #endif /* CONFIG_HAS_IOMEM */
> --
> 2.22.0
>
> _______________________________________________
> Cocci mailing list
> Cocci@systeme.lip6.fr
> https://systeme.lip6.fr/mailman/listinfo/cocci
>
_______________________________________________
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next prev parent reply other threads:[~2019-06-14 9:28 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-06 6:11 [Cocci] [PATCH] coccinelle: api: add devm_platform_ioremap_resource script Himanshu Jha
2019-04-06 6:31 ` Julia Lawall
2019-04-06 6:34 ` Julia Lawall
2019-07-06 12:16 ` Masahiro Yamada
2019-07-06 13:39 ` Julia Lawall
2019-07-07 9:55 ` [Cocci] Coccinelle: " Markus Elfring
2019-07-07 12:38 ` Masahiro Yamada
2019-09-19 7:21 ` Markus Elfring
2019-04-06 12:36 ` [Cocci] [PATCH] coccinelle: " Markus Elfring
2019-06-08 15:24 ` [Cocci] Coccinelle: " Markus Elfring
2019-06-08 17:26 ` Julia Lawall
2019-06-09 8:55 ` Markus Elfring
2019-06-11 20:40 ` Enrico Weigelt, metux IT consult
2019-06-12 5:28 ` Julia Lawall
2019-06-12 6:24 ` Markus Elfring
2019-06-14 9:22 ` [Cocci] [PATCH] drivers: Inline code in devm_platform_ioremap_resource() from two functions Markus Elfring
2019-06-14 9:27 ` Julia Lawall [this message]
2019-06-15 11:00 ` [Cocci] " Markus Elfring
2019-06-14 10:07 ` [Cocci] [PATCH] " Greg Kroah-Hartman
2019-06-17 20:21 ` Enrico Weigelt, metux IT consult
2019-06-18 5:37 ` [Cocci] " Markus Elfring
2019-06-18 9:35 ` Enrico Weigelt, metux IT consult
2019-06-18 10:21 ` Dan Carpenter
2019-06-18 11:44 ` Markus Elfring
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