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gpio: gpio-mxc: Use devm functions 

By using devm functions we can get a simpler code.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Fabio Estevam 2013-07-08 17:14:39 -03:00 committed by Linus Walleij
parent 04777396d8
commit 8cd73e4e38
1 changed files with 8 additions and 28 deletions
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36
drivers/gpio/gpio-mxc.c
View File

@ -405,34 +405,19 @@ static int mxc_gpio_probe(struct platform_device *pdev)
mxc_gpio_get_hw(pdev); mxc_gpio_get_hw(pdev);
port = kzalloc(sizeof(struct mxc_gpio_port), GFP_KERNEL); port = devm_kzalloc(&pdev->dev, sizeof(*port), GFP_KERNEL);
if (!port) if (!port)
return -ENOMEM; return -ENOMEM;
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!iores) { port->base = devm_ioremap_resource(&pdev->dev, iores);
err = -ENODEV; if (IS_ERR(port->base))
goto out_kfree; return PTR_ERR(port->base);
}
if (!request_mem_region(iores->start, resource_size(iores),
pdev->name)) {
err = -EBUSY;
goto out_kfree;
}
port->base = ioremap(iores->start, resource_size(iores));
if (!port->base) {
err = -ENOMEM;
goto out_release_mem;
}
port->irq_high = platform_get_irq(pdev, 1); port->irq_high = platform_get_irq(pdev, 1);
port->irq = platform_get_irq(pdev, 0); port->irq = platform_get_irq(pdev, 0);
if (port->irq < 0) { if (port->irq < 0)
err = -EINVAL; return -EINVAL;
goto out_iounmap;
}
/* disable the interrupt and clear the status */ /* disable the interrupt and clear the status */
writel(0, port->base + GPIO_IMR); writel(0, port->base + GPIO_IMR);
@ -462,7 +447,7 @@ static int mxc_gpio_probe(struct platform_device *pdev)
port->base + GPIO_DR, NULL, port->base + GPIO_DR, NULL,
port->base + GPIO_GDIR, NULL, 0); port->base + GPIO_GDIR, NULL, 0);
if (err) if (err)
goto out_iounmap; goto out_bgio;
port->bgc.gc.to_irq = mxc_gpio_to_irq; port->bgc.gc.to_irq = mxc_gpio_to_irq;
port->bgc.gc.base = (pdev->id < 0) ? of_alias_get_id(np, "gpio") * 32 : port->bgc.gc.base = (pdev->id < 0) ? of_alias_get_id(np, "gpio") * 32 :
@ -498,12 +483,7 @@ out_gpiochip_remove:
WARN_ON(gpiochip_remove(&port->bgc.gc) < 0); WARN_ON(gpiochip_remove(&port->bgc.gc) < 0);
out_bgpio_remove: out_bgpio_remove:
bgpio_remove(&port->bgc); bgpio_remove(&port->bgc);
out_iounmap: out_bgio:
iounmap(port->base);
out_release_mem:
release_mem_region(iores->start, resource_size(iores));
out_kfree:
kfree(port);
dev_info(&pdev->dev, "%s failed with errno %d\n", __func__, err); dev_info(&pdev->dev, "%s failed with errno %d\n", __func__, err);
return err; return err;
} }