fw_readfw
rv = curdev->plugin->fw_readfw(curdev, filename);
thisplug->plugin->fw_readfw = NULL;
tmpplug->fw_readfw = (int (*)())sym;
int (*fw_readfw)(struct devicelist *device, char *filename);
int fw_readfw(struct devicelist *device, char *filename);
int fw_readfw(struct devicelist *device, char *filename);
int fw_readfw(struct devicelist *device, char *filename);