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-rw-r--r--drivers/rtc/rtc-ds1742.c18
1 files changed, 6 insertions, 12 deletions
diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index eccdc62ae1c0..9fba0ae2e768 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/drivers/rtc/rtc-ds1742.c
@@ -56,7 +56,6 @@ struct rtc_plat_data {
void __iomem *ioaddr_nvram;
void __iomem *ioaddr_rtc;
size_t size_nvram;
- size_t size;
unsigned long last_jiffies;
struct bin_attribute nvram_attr;
};
@@ -168,22 +167,17 @@ static int ds1742_rtc_probe(struct platform_device *pdev)
void __iomem *ioaddr;
int ret = 0;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
- pdata->size = resource_size(res);
- if (!devm_request_mem_region(&pdev->dev, res->start, pdata->size,
- pdev->name))
- return -EBUSY;
- ioaddr = devm_ioremap(&pdev->dev, res->start, pdata->size);
- if (!ioaddr)
- return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ioaddr = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(ioaddr))
+ return PTR_ERR(ioaddr);
pdata->ioaddr_nvram = ioaddr;
- pdata->size_nvram = pdata->size - RTC_SIZE;
+ pdata->size_nvram = resource_size(res) - RTC_SIZE;
pdata->ioaddr_rtc = ioaddr + pdata->size_nvram;
sysfs_bin_attr_init(&pdata->nvram_attr);