[S390] 3215: Handle special console device.

The early console device is special as it already has all needed data
set and raw3215[0] allocated from con3215_init(). Therefore, it needs
special treatment in the probe function so it can be matched with the
3215 driver which is already owning it.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

drivers/s390/char/con3215.c

@@ -667,6 +667,9 @@ raw3215_probe (struct ccw_device *cdev)
 	struct raw3215_info *raw;
 	int line;
 
+	/* Console is special. */
+	if (raw3215[0] && (cdev->dev.driver_data == raw3215[0]))
+		return 0;
 	raw = kmalloc(sizeof(struct raw3215_info) +
 		      RAW3215_INBUF_SIZE, GFP_KERNEL|GFP_DMA);
 	if (raw == NULL)