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path: root/drivers/rtc/rtc-ds1286.c
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Diffstat (limited to 'drivers/rtc/rtc-ds1286.c')
-rw-r--r--drivers/rtc/rtc-ds1286.c49
1 files changed, 10 insertions, 39 deletions
diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c
index d989412a348a..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;
};
@@ -270,7 +268,6 @@ static int ds1286_set_time(struct device *dev, struct rtc_time *tm)
static int ds1286_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
{
struct ds1286_priv *priv = dev_get_drvdata(dev);
- unsigned char cmd;
unsigned long flags;
/*
@@ -281,7 +278,7 @@ static int ds1286_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
alm->time.tm_min = ds1286_rtc_read(priv, RTC_MINUTES_ALARM) & 0x7f;
alm->time.tm_hour = ds1286_rtc_read(priv, RTC_HOURS_ALARM) & 0x1f;
alm->time.tm_wday = ds1286_rtc_read(priv, RTC_DAY_ALARM) & 0x07;
- cmd = ds1286_rtc_read(priv, RTC_CMD);
+ ds1286_rtc_read(priv, RTC_CMD);
spin_unlock_irqrestore(&priv->lock, flags);
alm->time.tm_min = bcd2bin(alm->time.tm_min);
@@ -334,56 +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;
}