hwmon: Use platform_device_add_data()

Use platform_device_add_data() in hardware monitoring drivers. This
makes the code nicer and smaller too. Reported by David Hubbard.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Hubbard <david.c.hubbard@gmail.com>
diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c
index 1e21c8c..9bac3c2 100644
--- a/drivers/hwmon/smsc47m1.c
+++ b/drivers/hwmon/smsc47m1.c
@@ -693,15 +693,12 @@
 		goto exit_device_put;
 	}
 
-	pdev->dev.platform_data = kmalloc(sizeof(struct smsc47m1_sio_data),
-					  GFP_KERNEL);
-	if (!pdev->dev.platform_data) {
-		err = -ENOMEM;
+	err = platform_device_add_data(pdev, sio_data,
+				       sizeof(struct smsc47m1_sio_data));
+	if (err) {
 		printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
 		goto exit_device_put;
 	}
-	memcpy(pdev->dev.platform_data, sio_data,
-	       sizeof(struct smsc47m1_sio_data));
 
 	err = platform_device_add(pdev);
 	if (err) {