diff options
| -rw-r--r-- | drivers/pwm/pwm-imx.c | 57 |
1 files changed, 10 insertions, 47 deletions
diff --git a/drivers/pwm/pwm-imx.c b/drivers/pwm/pwm-imx.c index 900d14562de..2a0b3533397 100644 --- a/drivers/pwm/pwm-imx.c +++ b/drivers/pwm/pwm-imx.c @@ -159,18 +159,16 @@ static int __devinit imx_pwm_probe(struct platform_device *pdev) struct resource *r; int ret = 0; - imx = kzalloc(sizeof(*imx), GFP_KERNEL); + imx = devm_kzalloc(&pdev->dev, sizeof(*imx), GFP_KERNEL); if (imx == NULL) { dev_err(&pdev->dev, "failed to allocate memory\n"); return -ENOMEM; } - imx->clk = clk_get(&pdev->dev, "pwm"); + imx->clk = devm_clk_get(&pdev->dev, "pwm"); - if (IS_ERR(imx->clk)) { - ret = PTR_ERR(imx->clk); - goto err_free; - } + if (IS_ERR(imx->clk)) + return PTR_ERR(imx->clk); imx->chip.ops = &imx_pwm_ops; imx->chip.dev = &pdev->dev; @@ -182,65 +180,30 @@ static int __devinit imx_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_clk; - } - - 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_clk; + return -ENODEV; } - imx->mmio_base = ioremap(r->start, resource_size(r)); - if (imx->mmio_base == NULL) { - dev_err(&pdev->dev, "failed to ioremap() registers\n"); - ret = -ENODEV; - goto err_free_mem; - } + imx->mmio_base = devm_request_and_ioremap(&pdev->dev, r); + if (imx->mmio_base == NULL) + return -EADDRNOTAVAIL; ret = pwmchip_add(&imx->chip); if (ret < 0) - goto err_iounmap; + return ret; platform_set_drvdata(pdev, imx); return 0; - -err_iounmap: - iounmap(imx->mmio_base); -err_free_mem: - release_mem_region(r->start, resource_size(r)); -err_free_clk: - clk_put(imx->clk); -err_free: - kfree(imx); - return ret; } static int __devexit imx_pwm_remove(struct platform_device *pdev) { struct imx_chip *imx; - struct resource *r; - int ret; imx = platform_get_drvdata(pdev); if (imx == NULL) return -ENODEV; - ret = pwmchip_remove(&imx->chip); - if (ret) - return ret; - - iounmap(imx->mmio_base); - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(r->start, resource_size(r)); - - clk_put(imx->clk); - - kfree(imx); - return 0; + return pwmchip_remove(&imx->chip); } static struct platform_driver imx_pwm_driver = { |