scsi: use 64-bit value for 'max_luns'

Now that we're using 64-bit LUNs internally we need to increase
the size of max_luns to 64 bits, too.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 6bb2b52..ac5d94c 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -1860,7 +1860,7 @@
 		 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
 		 adapter->fw_version, adapter->product_info.max_commands,
 		 adapter->host->max_id, adapter->host->max_channel,
-		 adapter->host->max_lun);
+		 (u32)adapter->host->max_lun);
 	return buffer;
 }