From 061d698e208efb8036673295b5be3b0c8be75082 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Mon, 29 Apr 2013 16:20:38 -0700 Subject: [PATCH] rtc: rtc-ds1286: use devm_*() functions Use devm_*() functions to make cleanup paths simpler. Signed-off-by: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-ds1286.c | 46 ++++++++-------------------------------- 1 file changed, 9 insertions(+), 37 deletions(-) diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c index d120cb8bfcbe..398c96a98fc4 100644 --- a/drivers/rtc/rtc-ds1286.c +++ b/drivers/rtc/rtc-ds1286.c @@ -25,8 +25,6 @@ struct ds1286_priv { struct rtc_device *rtc; u32 __iomem *rtcregs; - size_t size; - unsigned long baseaddr; spinlock_t lock; }; @@ -333,56 +331,30 @@ static int ds1286_probe(struct platform_device *pdev) struct rtc_device *rtc; struct resource *res; struct ds1286_priv *priv; - int ret = 0; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) return -ENODEV; - priv = kzalloc(sizeof(struct ds1286_priv), GFP_KERNEL); + priv = devm_kzalloc(&pdev->dev, sizeof(struct ds1286_priv), GFP_KERNEL); if (!priv) return -ENOMEM; - priv->size = resource_size(res); - if (!request_mem_region(res->start, priv->size, pdev->name)) { - ret = -EBUSY; - goto out; - } - priv->baseaddr = res->start; - priv->rtcregs = ioremap(priv->baseaddr, priv->size); - if (!priv->rtcregs) { - ret = -ENOMEM; - goto out; - } + priv->rtcregs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(priv->rtcregs)) + return PTR_ERR(priv->rtcregs); + spin_lock_init(&priv->lock); platform_set_drvdata(pdev, priv); - rtc = rtc_device_register("ds1286", &pdev->dev, - &ds1286_ops, THIS_MODULE); - if (IS_ERR(rtc)) { - ret = PTR_ERR(rtc); - goto out; - } + rtc = devm_rtc_device_register(&pdev->dev, "ds1286", &ds1286_ops, + THIS_MODULE); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); priv->rtc = rtc; return 0; - -out: - if (priv->rtc) - rtc_device_unregister(priv->rtc); - if (priv->rtcregs) - iounmap(priv->rtcregs); - if (priv->baseaddr) - release_mem_region(priv->baseaddr, priv->size); - kfree(priv); - return ret; } static int ds1286_remove(struct platform_device *pdev) { - struct ds1286_priv *priv = platform_get_drvdata(pdev); - - rtc_device_unregister(priv->rtc); - iounmap(priv->rtcregs); - release_mem_region(priv->baseaddr, priv->size); - kfree(priv); return 0; } -- 2.20.1