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Subject[PATCH 06/27] rtc: rtc-ds1286: use devm_*() functions
Date
Use devm_*() functions to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
drivers/rtc/rtc-ds1286.c | 46 +++++++++-------------------------------------
1 files changed, 9 insertions(+), 37 deletions(-)

diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c
index d120cb8..398c96a 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;
}

--
1.7.2.5



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