Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932247Ab2GAA2e (ORCPT ); Sat, 30 Jun 2012 20:28:34 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:42927 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932074Ab2GAA2c (ORCPT ); Sat, 30 Jun 2012 20:28:32 -0400 Message-ID: <1341102507.3712.1.camel@phoenix> Subject: [PATCH v2 2/3] pwm: Convert pwm-pxa to use devm_* APIs From: Axel Lin To: Thierry Reding Cc: linux-kernel@vger.kernel.org, Eric Miao Date: Sun, 01 Jul 2012 08:28:27 +0800 In-Reply-To: <1341102443.3712.0.camel@phoenix> References: <1341102443.3712.0.camel@phoenix> 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: 2945 Lines: 114 Signed-off-by: Axel Lin --- drivers/pwm/pwm-pxa.c | 52 +++++++++++-------------------------------------- 1 file changed, 11 insertions(+), 41 deletions(-) diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c index d5c6ce5..bd5867a 100644 --- a/drivers/pwm/pwm-pxa.c +++ b/drivers/pwm/pwm-pxa.c @@ -1,5 +1,5 @@ /* - * linux/arch/arm/mach-pxa/pwm.c + * drivers/pwm/pwm-pxa.c * * simple driver for PWM (Pulse Width Modulator) controller * @@ -145,17 +145,16 @@ static int __devinit pwm_probe(struct platform_device *pdev) struct resource *r; int ret = 0; - pwm = kzalloc(sizeof(*pwm), GFP_KERNEL); + pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL); if (pwm == NULL) { dev_err(&pdev->dev, "failed to allocate memory\n"); return -ENOMEM; } - pwm->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(pwm->clk)) { - ret = PTR_ERR(pwm->clk); - goto err_free; - } + pwm->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(pwm->clk)) + return PTR_ERR(pwm->clk); + pwm->clk_enabled = 0; pwm->chip.dev = &pdev->dev; @@ -166,23 +165,12 @@ 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_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; } - pwm->mmio_base = ioremap(r->start, resource_size(r)); - if (pwm->mmio_base == NULL) { - dev_err(&pdev->dev, "failed to ioremap() registers\n"); - ret = -ENODEV; - goto err_free_mem; - } + pwm->mmio_base = devm_request_and_ioremap(&pdev->dev, r); + if (pwm->mmio_base == NULL) + return -EADDRNOTAVAIL; ret = pwmchip_add(&pwm->chip); if (ret < 0) { @@ -192,35 +180,17 @@ static int __devinit pwm_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pwm); return 0; - -err_free_mem: - release_mem_region(r->start, resource_size(r)); -err_free_clk: - clk_put(pwm->clk); -err_free: - kfree(pwm); - return ret; } static int __devexit pwm_remove(struct platform_device *pdev) { struct pxa_pwm_chip *chip; - struct resource *r; chip = platform_get_drvdata(pdev); if (chip == NULL) return -ENODEV; - pwmchip_remove(&chip->chip); - - iounmap(chip->mmio_base); - - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(r->start, resource_size(r)); - - clk_put(chip->clk); - kfree(chip); - return 0; + return pwmchip_remove(&chip->chip); } static struct platform_driver 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/