block: ide: Don't bother to create BLK device if no CDROM inserted

When there is no CDROM inserted, the block size is zero hence there
is no need to create a BLK device for it.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/block/ide.c

@@ -1202,6 +1202,13 @@ static int ide_probe(struct udevice *udev)
 
 			blksz = ide_dev_desc[i].blksz;
 			size = blksz * ide_dev_desc[i].lba;
+
+			/*
+			 * With CDROM, if there is no CD inserted, blksz will
+			 * be zero, don't bother to create IDE block device.
+			 */
+			if (!blksz)
+				continue;
 			ret = blk_create_devicef(udev, "ide_blk", name,
 						 IF_TYPE_IDE, i,
 						 blksz, size, &blk_dev);