Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932216Ab2GAA2N (ORCPT ); Sat, 30 Jun 2012 20:28:13 -0400 Received: from mail-pz0-f46.google.com ([209.85.210.46]:46283 "EHLO mail-pz0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932151Ab2GAA1c (ORCPT ); Sat, 30 Jun 2012 20:27:32 -0400 Message-ID: <1341102443.3712.0.camel@phoenix> Subject: [PATCH v2 1/3] pwm: Convert pwm-imx to use devm_* APIs From: Axel Lin To: Thierry Reding Cc: linux-kernel@vger.kernel.org, Sascha Hauer Date: Sun, 01 Jul 2012 08:27:23 +0800 Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2847 Lines: 114 Signed-off-by: Axel Lin --- drivers/pwm/pwm-imx.c | 57 +++++++++---------------------------------------- 1 file changed, 10 insertions(+), 47 deletions(-) diff --git a/drivers/pwm/pwm-imx.c b/drivers/pwm/pwm-imx.c index 900d145..2a0b353 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 = { -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/