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authorFabio Estevam <fabio.estevam@freescale.com>2013-07-08 17:14:39 -0300
committerLinus Walleij <linus.walleij@linaro.org>2013-07-20 19:38:52 +0200
commit8cd73e4e3807315115122fd4e3ac7c33007cdf9c (patch)
treedf7fe068b04ef85b0875520543c2e3b65bea9bc0
parent04777396d8d183f3f3edd3872eb8bf50dd458b82 (diff)
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>
-rw-r--r--drivers/gpio/gpio-mxc.c36
1 files changed, 8 insertions, 28 deletions
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 7176743915d..91f2ac35038 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -405,34 +405,19 @@ static int mxc_gpio_probe(struct platform_device *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)
return -ENOMEM;
iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!iores) {
- err = -ENODEV;
- goto out_kfree;
- }
-
- 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->base = devm_ioremap_resource(&pdev->dev, iores);
+ if (IS_ERR(port->base))
+ return PTR_ERR(port->base);
port->irq_high = platform_get_irq(pdev, 1);
port->irq = platform_get_irq(pdev, 0);
- if (port->irq < 0) {
- err = -EINVAL;
- goto out_iounmap;
- }
+ if (port->irq < 0)
+ return -EINVAL;
/* disable the interrupt and clear the status */
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_GDIR, NULL, 0);
if (err)
- goto out_iounmap;
+ goto out_bgio;
port->bgc.gc.to_irq = mxc_gpio_to_irq;
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);
out_bgpio_remove:
bgpio_remove(&port->bgc);
-out_iounmap:
- iounmap(port->base);
-out_release_mem:
- release_mem_region(iores->start, resource_size(iores));
-out_kfree:
- kfree(port);
+out_bgio:
dev_info(&pdev->dev, "%s failed with errno %d\n", __func__, err);
return err;
}