SNDRV_SEQ_PORT_FLG_GIVEN_PORT
if (info->flags & SNDRV_SEQ_PORT_FLG_GIVEN_PORT)
port->flags = SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
port->flags = SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
port->flags = SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
port->flags |= SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
port->flags = SNDRV_SEQ_PORT_FLG_GIVEN_PORT;