From 22d260bd88452ae81c80514810434d4cc98b7978 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Tue, 26 Jun 2012 16:58:10 +0800 Subject: [PATCH] pwm: pwm-mxs: use devm_* managed functions Use devm_* managed functions to have a clean fail-out. Signed-off-by: Shawn Guo Signed-off-by: Thierry Reding --- drivers/pwm/pwm-mxs.c | 24 ++++++++---------------- 1 file changed, 8 insertions(+), 16 deletions(-) diff --git a/drivers/pwm/pwm-mxs.c b/drivers/pwm/pwm-mxs.c index 23e524bbee03..3b7f3ab116e3 100644 --- a/drivers/pwm/pwm-mxs.c +++ b/drivers/pwm/pwm-mxs.c @@ -129,21 +129,21 @@ static int mxs_pwm_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct mxs_pwm_chip *mxs; + struct resource *res; int ret; mxs = devm_kzalloc(&pdev->dev, sizeof(*mxs), GFP_KERNEL); if (!mxs) return -ENOMEM; - mxs->base = of_iomap(np, 0); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + mxs->base = devm_request_and_ioremap(&pdev->dev, res); if (!mxs->base) return -EADDRNOTAVAIL; - mxs->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(mxs->clk)) { - ret = PTR_ERR(mxs->clk); - goto iounmap; - } + mxs->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(mxs->clk)) + return PTR_ERR(mxs->clk); mxs->chip.dev = &pdev->dev; mxs->chip.ops = &mxs_pwm_ops; @@ -151,13 +151,13 @@ static int mxs_pwm_probe(struct platform_device *pdev) ret = of_property_read_u32(np, "fsl,pwm-number", &mxs->chip.npwm); if (ret < 0) { dev_err(&pdev->dev, "failed to get pwm number: %d\n", ret); - goto clk_put; + return ret; } ret = pwmchip_add(&mxs->chip); if (ret < 0) { dev_err(&pdev->dev, "failed to add pwm chip %d\n", ret); - goto clk_put; + return ret; } mxs->dev = &pdev->dev; @@ -166,12 +166,6 @@ static int mxs_pwm_probe(struct platform_device *pdev) stmp_reset_block(mxs->base); return 0; - -clk_put: - clk_put(mxs->clk); -iounmap: - iounmap(mxs->base); - return ret; } static int __devexit mxs_pwm_remove(struct platform_device *pdev) @@ -179,8 +173,6 @@ static int __devexit mxs_pwm_remove(struct platform_device *pdev) struct mxs_pwm_chip *mxs = platform_get_drvdata(pdev); pwmchip_remove(&mxs->chip); - clk_put(mxs->clk); - iounmap(mxs->base); return 0; } -- 2.20.1