diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 9d86203..c53633d 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -3896,8 +3896,8 @@
 		break;
 
 	default:
-		dev_err(host->dev, "BUG: invalid board index %u\n", board_idx);
-		return 1;
+		dev_alert(host->dev, "BUG: invalid board index %u\n", board_idx);
+		return -EINVAL;
 	}
 
 	hpriv->hp_flags = hp_flags;