drivers/rtc/rtc-m48t59.c: use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.  This is a cosmetic change to make
the code simpler and enhance the readability.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-m48t59.c

@@ -68,7 +68,7 @@ m48t59_mem_readb(struct device *dev, u32 ofs)
 static int m48t59_rtc_read_time(struct device *dev, struct rtc_time *tm)
 {
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	unsigned long flags;
 	u8 val;
@@ -111,7 +111,7 @@ static int m48t59_rtc_read_time(struct device *dev, struct rtc_time *tm)
 static int m48t59_rtc_set_time(struct device *dev, struct rtc_time *tm)
 {
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	unsigned long flags;
 	u8 val = 0;
@@ -158,7 +158,7 @@ static int m48t59_rtc_set_time(struct device *dev, struct rtc_time *tm)
 static int m48t59_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	struct rtc_time *tm = &alrm->time;
 	unsigned long flags;
@@ -205,7 +205,7 @@ static int m48t59_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
 static int m48t59_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	struct rtc_time *tm = &alrm->time;
 	u8 mday, hour, min, sec;
@@ -266,7 +266,7 @@ static int m48t59_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
 static int m48t59_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
 {
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	unsigned long flags;
 
@@ -283,7 +283,7 @@ static int m48t59_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
 static int m48t59_rtc_proc(struct device *dev, struct seq_file *seq)
 {
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	unsigned long flags;
 	u8 val;
@@ -304,7 +304,7 @@ static irqreturn_t m48t59_rtc_interrupt(int irq, void *dev_id)
 {
 	struct device *dev = (struct device *)dev_id;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	u8 event;
 
@@ -340,7 +340,7 @@ static ssize_t m48t59_nvram_read(struct file *filp, struct kobject *kobj,
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	ssize_t cnt = 0;
 	unsigned long flags;
@@ -360,7 +360,7 @@ static ssize_t m48t59_nvram_write(struct file *filp, struct kobject *kobj,
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
 	struct platform_device *pdev = to_platform_device(dev);
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);
 	ssize_t cnt = 0;
 	unsigned long flags;
@@ -385,7 +385,7 @@ static struct bin_attribute m48t59_nvram_attr = {
 
 static int m48t59_rtc_probe(struct platform_device *pdev)
 {
-	struct m48t59_plat_data *pdata = pdev->dev.platform_data;
+	struct m48t59_plat_data *pdata = dev_get_platdata(&pdev->dev);
 	struct m48t59_private *m48t59 = NULL;
 	struct resource *res;
 	int ret = -ENOMEM;