Re: [PATCH 3/29] drivers/gpio: simplify use of devm_ioremap_resource
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2013-08-14 09:24:00
Also in:
kernel-janitors, lkml
On Wed, Aug 14, 2013 at 2:41 PM, Julia Lawall [off-list ref] wrote:
From: Julia Lawall <redacted> 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 <redacted> ---
drivers/gpio/gpio-spear-spics.c | 7 +------ 2 files changed, 2 insertions(+), 12 deletions(-)
For SPEAr: Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
quoted hunk ↗ jump to hunk
diff --git a/drivers/gpio/gpio-spear-spics.c b/drivers/gpio/gpio-spear-spics.c index 7a4bf7c..e9a0415 100644 --- a/drivers/gpio/gpio-spear-spics.c +++ b/drivers/gpio/gpio-spear-spics.c@@ -128,18 +128,13 @@ static int spics_gpio_probe(struct platform_device *pdev) struct resource *res; int ret; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "invalid IORESOURCE_MEM\n"); - return -EBUSY; - } - spics = devm_kzalloc(&pdev->dev, sizeof(*spics), GFP_KERNEL); if (!spics) { dev_err(&pdev->dev, "memory allocation fail\n"); return -ENOMEM; } + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); spics->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(spics->base)) return PTR_ERR(spics->base); --To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/