firewire: core: trivial fix for warning strings

WARN's format string argument should not carry a printk level prefix.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/firewire/core-transaction.c

@@ -246,7 +246,7 @@ static void fw_fill_request(struct fw_packet *packet, int tcode, int tlabel,
 		break;
 
 	default:
-		WARN(1, KERN_ERR "wrong tcode %d", tcode);
+		WARN(1, "wrong tcode %d", tcode);
 	}
  common:
 	packet->speed = speed;
@@ -610,7 +610,7 @@ int fw_get_response_length(struct fw_request *r)
 		}
 
 	default:
-		WARN(1, KERN_ERR "wrong tcode %d", tcode);
+		WARN(1, "wrong tcode %d", tcode);
 		return 0;
 	}
 }
@@ -666,7 +666,7 @@ void fw_fill_response(struct fw_packet *response, u32 *request_header,
 		break;
 
 	default:
-		WARN(1, KERN_ERR "wrong tcode %d", tcode);
+		WARN(1, "wrong tcode %d", tcode);
 	}
 
 	response->payload_mapped = false;