base-files: Cancel firmware loading if file doesn't exist

SVN-Revision: 20649

package/base-files/files/sbin/hotplug-call

@@ -10,7 +10,7 @@ export HOTPLUG_TYPE="$1"
 		echo 1 > "/sys$DEVPATH/loading"
 		dd if="/lib/firmware/$FIRMWARE" of="/sys$DEVPATH/data" bs=64k
 		echo 0 > "/sys$DEVPATH/loading"
-	}
+	} || echo -1 > "/sys$DEVPATH/loading"
 	exit 0
 }