From 8944df726c7d2916764d18be8e944bd7ea3f2f51 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Fri, 5 Oct 2012 11:45:28 +0200 Subject: [PATCH] gpio/gpio-pl061: Covert to use devm_* functions Use the devm_* family of functions during probe to reduce the error handling code footprint. Signed-off-by: Tobias Klauser Signed-off-by: Linus Walleij --- drivers/gpio/gpio-pl061.c | 59 ++++++++++++++++++----------------------------- 1 file changed, 22 insertions(+), 37 deletions(-) diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c index b4b5da4..31d9c9e 100644 --- a/drivers/gpio/gpio-pl061.c +++ b/drivers/gpio/gpio-pl061.c @@ -216,39 +216,34 @@ static void __init pl061_init_gc(struct pl061_gpio *chip, int irq_base) IRQ_GC_INIT_NESTED_LOCK, IRQ_NOREQUEST, 0); } -static int pl061_probe(struct amba_device *dev, const struct amba_id *id) +static int pl061_probe(struct amba_device *adev, const struct amba_id *id) { - struct pl061_platform_data *pdata; + struct device *dev = &adev->dev; + struct pl061_platform_data *pdata = dev->platform_data; struct pl061_gpio *chip; int ret, irq, i; - chip = kzalloc(sizeof(*chip), GFP_KERNEL); + chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); if (chip == NULL) return -ENOMEM; - pdata = dev->dev.platform_data; if (pdata) { chip->gc.base = pdata->gpio_base; chip->irq_base = pdata->irq_base; - } else if (dev->dev.of_node) { + } else if (adev->dev.of_node) { chip->gc.base = -1; chip->irq_base = 0; - } else { - ret = -ENODEV; - goto free_mem; - } + } else + return -ENODEV; - if (!request_mem_region(dev->res.start, - resource_size(&dev->res), "pl061")) { - ret = -EBUSY; - goto free_mem; - } + if (!devm_request_mem_region(dev, adev->res.start, + resource_size(&adev->res), "pl061")) + return -EBUSY; - chip->base = ioremap(dev->res.start, resource_size(&dev->res)); - if (chip->base == NULL) { - ret = -ENOMEM; - goto release_region; - } + chip->base = devm_ioremap(dev, adev->res.start, + resource_size(&adev->res)); + if (chip->base == NULL) + return -ENOMEM; spin_lock_init(&chip->lock); @@ -258,13 +253,13 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id) chip->gc.set = pl061_set_value; chip->gc.to_irq = pl061_to_irq; chip->gc.ngpio = PL061_GPIO_NR; - chip->gc.label = dev_name(&dev->dev); - chip->gc.dev = &dev->dev; + chip->gc.label = dev_name(dev); + chip->gc.dev = dev; chip->gc.owner = THIS_MODULE; ret = gpiochip_add(&chip->gc); if (ret) - goto iounmap; + return ret; /* * irq_chip support @@ -276,11 +271,10 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id) pl061_init_gc(chip, chip->irq_base); writeb(0, chip->base + GPIOIE); /* disable irqs */ - irq = dev->irq[0]; - if (irq < 0) { - ret = -ENODEV; - goto iounmap; - } + irq = adev->irq[0]; + if (irq < 0) + return -ENODEV; + irq_set_chained_handler(irq, pl061_irq_handler); irq_set_handler_data(irq, chip); @@ -294,18 +288,9 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id) } } - amba_set_drvdata(dev, chip); + amba_set_drvdata(adev, chip); return 0; - -iounmap: - iounmap(chip->base); -release_region: - release_mem_region(dev->res.start, resource_size(&dev->res)); -free_mem: - kfree(chip); - - return ret; } #ifdef CONFIG_PM -- 2.7.4