X-Git-Url: http://pilppa.org/gitweb/?p=libplp.git;a=blobdiff_plain;f=src%2FDataReader.cc;fp=src%2FDataReader.cc;h=9731bce6170c6e007e2d4bda7042f6507ce1b5d9;hp=0e6ebf380fb2e335fb028956607abd8f430891d7;hb=1f4c845decad23299609aa00ee97ba1c61a1f027;hpb=6114bb5f252afb1e86682836b82db3e4c48213fe

diff --git a/src/DataReader.cc b/src/DataReader.cc
index 0e6ebf3..9731bce 100644
--- a/src/DataReader.cc
+++ b/src/DataReader.cc
@@ -441,14 +441,19 @@ string DataReader::get_device_id() {
 }
 
 /**
- * Read device type from the device specific config file
+ * Read device type from the device specific config file.
+ *
+ * @rerurn string representing device type.
+ * In the case of error, an empty string is returned.
  */
 string DataReader::get_device_type() {
 	string	ret_val;
 
 	if (device_config == NULL) {
 		device_config	= DeviceConfig::get_device_config(device_id);
-		ret_val		= device_config->get_config_value(DEVICE_CONFIG_VALUE_KEY__TYPE);
+	}
+	if (device_config != NULL) {
+		ret_val	= device_config->get_config_value(DEVICE_CONFIG_VALUE_KEY__TYPE);
 	}
 	return ret_val;
 }