rtc: simplify devm_request_mem_region/devm_ioremap

[karo-tx-linux.git] / drivers / rtc / rtc-ds1511.c

diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 308a8fefe76f7730b68b0405a46cc1fe50c1ac96..bc7b4fcf603cd741815915d81be8af7789fefaf9 100644 (file)
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -89,7 +89,6 @@ enum ds1511reg {
 struct rtc_plat_data {
        struct rtc_device *rtc;
        void __iomem *ioaddr;           /* virtual base address */
-       int size;                               /* amount of memory mapped */
        int irq;
        unsigned int irqen;
        int alrm_sec;
@@ -479,20 +478,14 @@ static int ds1511_rtc_probe(struct platform_device *pdev)
        struct rtc_plat_data *pdata;
        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;
-       ds1511_base = devm_ioremap(&pdev->dev, res->start, pdata->size);
-       if (!ds1511_base)
-               return -ENOMEM;
+
+       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       ds1511_base = devm_ioremap_resource(&pdev->dev, res);
+       if (IS_ERR(ds1511_base))
+               return PTR_ERR(ds1511_base);
        pdata->ioaddr = ds1511_base;
        pdata->irq = platform_get_irq(pdev, 0);