diff --git a/drivers/media/common/siano/smscoreapi.c b/drivers/media/common/siano/smscoreapi.c
index 9b2f2b42bfbb..44040a60cd77 100644
--- a/drivers/media/common/siano/smscoreapi.c
+++ b/drivers/media/common/siano/smscoreapi.c
@@ -434,7 +434,7 @@ static struct mutex g_smscore_deviceslock;
 static struct list_head g_smscore_registry;
 static struct mutex g_smscore_registrylock;
 
-static int default_mode = 4;
+static int default_mode = DEVICE_MODE_NONE;
 
 module_param(default_mode, int, 0644);
 MODULE_PARM_DESC(default_mode, "default firmware id (device mode)");
@@ -880,8 +880,15 @@ int smscore_configure_board(struct smscore_device_t *coredev)
  */
 int smscore_start_device(struct smscore_device_t *coredev)
 {
-	int rc = smscore_set_device_mode(
-			coredev, smscore_registry_getmode(coredev->devpath));
+	int rc;
+	int board_id = smscore_get_board_id(coredev);
+	int mode = smscore_registry_getmode(coredev->devpath);
+
+	/* Device is initialized as DEVICE_MODE_NONE */
+	if (board_id != SMS_BOARD_UNKNOWN && mode == DEVICE_MODE_NONE)
+		mode = sms_get_board(board_id)->default_mode;
+
+	rc = smscore_set_device_mode(coredev, mode);
 	if (rc < 0) {
 		sms_info("set device mode faile , rc %d", rc);
 		return rc;
@@ -1269,6 +1276,12 @@ static char *smscore_get_fw_filename(struct smscore_device_t *coredev,
 
 	type = smscore_registry_gettype(coredev->devpath);
 
+	/* Prevent looking outside the smscore_fw_lkup table */
+	if (type <= SMS_UNKNOWN_TYPE || type >= SMS_NUM_OF_DEVICE_TYPES)
+		return NULL;
+	if (mode <= DEVICE_MODE_NONE || mode >= DEVICE_MODE_MAX)
+		return NULL;
+
 	if ((board_id == SMS_BOARD_UNKNOWN) || (lookup == 1)) {
 		sms_debug("trying to get fw name from lookup table mode %d type %d",
 			  mode, type);
@@ -1338,7 +1351,7 @@ int smscore_set_device_mode(struct smscore_device_t *coredev, int mode)
 
 	sms_debug("set device mode to %d", mode);
 	if (coredev->device_flags & SMS_DEVICE_FAMILY2) {
-		if (mode < DEVICE_MODE_DVBT || mode >= DEVICE_MODE_RAW_TUNER) {
+		if (mode <= DEVICE_MODE_NONE || mode >= DEVICE_MODE_MAX) {
 			sms_err("invalid mode specified %d", mode);
 			return -EINVAL;
 		}
@@ -1390,7 +1403,7 @@ int smscore_set_device_mode(struct smscore_device_t *coredev, int mode)
 				sms_err("device init failed, rc %d.", rc);
 		}
 	} else {
-		if (mode < DEVICE_MODE_DVBT || mode > DEVICE_MODE_MAX) {
+		if (mode <= DEVICE_MODE_NONE || mode >= DEVICE_MODE_MAX) {
 			sms_err("invalid mode specified %d", mode);
 			return -EINVAL;
 		}