/** Set value of a configuration key in driver or a given device instance.
* @see sr_config_set(). */
int (*config_set) (int id, GVariant *data,
const struct sr_dev_inst *sdi,
/** Set value of a configuration key in driver or a given device instance.
* @see sr_config_set(). */
int (*config_set) (int id, GVariant *data,
const struct sr_dev_inst *sdi,