rtc: rtc-max6902 - set driver data in max6902_probe()

Current implementation does not set driver data in max6902_probe(), thus
calling platform_get_drvdata(spi) in max6902_remove() returns NULL.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/rtc-max6902.c b/drivers/rtc/rtc-max6902.c
index 657403e..0ec3f588 100644
--- a/drivers/rtc/rtc-max6902.c
+++ b/drivers/rtc/rtc-max6902.c
@@ -139,12 +139,13 @@
 	if (IS_ERR(rtc))
 		return PTR_ERR(rtc);
 
+	dev_set_drvdata(&spi->dev, rtc);
 	return 0;
 }
 
 static int __devexit max6902_remove(struct spi_device *spi)
 {
-	struct rtc_device *rtc = platform_get_drvdata(spi);
+	struct rtc_device *rtc = dev_get_drvdata(&spi->dev);
 
 	rtc_device_unregister(rtc);
 	return 0;