From 261995dd305ff991ca1cfb462862a5311739333b Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sun, 1 Jul 2012 08:29:28 +0800 Subject: [PATCH] pwm: Convert pwm-vt8500 to use devm_* APIs Signed-off-by: Axel Lin Signed-off-by: Thierry Reding --- drivers/pwm/pwm-vt8500.c | 47 +++++++--------------------------------- 1 file changed, 8 insertions(+), 39 deletions(-) diff --git a/drivers/pwm/pwm-vt8500.c b/drivers/pwm/pwm-vt8500.c index 3db0746f7200..548021439f0c 100644 --- a/drivers/pwm/pwm-vt8500.c +++ b/drivers/pwm/pwm-vt8500.c @@ -1,5 +1,5 @@ /* - * arch/arm/mach-vt8500/pwm.c + * drivers/pwm/pwm-vt8500.c * * Copyright (C) 2010 Alexey Charkov * @@ -113,7 +113,7 @@ static int __devinit pwm_probe(struct platform_device *pdev) struct resource *r; int ret; - chip = kzalloc(sizeof(*chip), GFP_KERNEL); + chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); if (chip == NULL) { dev_err(&pdev->dev, "failed to allocate memory\n"); return -ENOMEM; @@ -127,61 +127,30 @@ static int __devinit pwm_probe(struct platform_device *pdev) r = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (r == NULL) { dev_err(&pdev->dev, "no memory resource defined\n"); - ret = -ENODEV; - goto err_free; + return -ENODEV; } - r = request_mem_region(r->start, resource_size(r), pdev->name); - if (r == NULL) { - dev_err(&pdev->dev, "failed to request memory resource\n"); - ret = -EBUSY; - goto err_free; - } - - chip->base = ioremap(r->start, resource_size(r)); - if (chip->base == NULL) { - dev_err(&pdev->dev, "failed to ioremap() registers\n"); - ret = -ENODEV; - goto err_free_mem; - } + chip->base = devm_request_and_ioremap(&pdev->dev, r); + if (chip->base == NULL) + return -EADDRNOTAVAIL; ret = pwmchip_add(&chip->chip); if (ret < 0) - goto err_unmap; + return ret; platform_set_drvdata(pdev, chip); return ret; - -err_unmap: - iounmap(chip->base); -err_free_mem: - release_mem_region(r->start, resource_size(r)); -err_free: - kfree(chip); - return ret; } static int __devexit pwm_remove(struct platform_device *pdev) { struct vt8500_chip *chip; - struct resource *r; - int err; chip = platform_get_drvdata(pdev); if (chip == NULL) return -ENODEV; - err = pwmchip_remove(&chip->chip); - if (err < 0) - return err; - - iounmap(chip->base); - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(r->start, resource_size(r)); - - kfree(chip); - return 0; + return pwmchip_remove(&chip->chip); } static struct platform_driver pwm_driver = {