+static int check_options(struct sr_dev_driver *driver, GSList *options,
+ uint32_t optlist_key, struct sr_dev_inst *sdi,
+ struct sr_channel_group *cg)
+{
+ struct sr_config *src;
+ const struct sr_config_info *srci;
+ GVariant *gvar_opts;
+ GSList *l;
+ const uint32_t *opts;
+ gsize num_opts, i;
+ int ret;
+
+ if (sr_config_list(driver, sdi, cg, optlist_key, &gvar_opts) != SR_OK) {
+ /* Driver publishes no options for this optlist. */
+ return SR_ERR;
+ }
+
+ ret = SR_OK;
+ opts = g_variant_get_fixed_array(gvar_opts, &num_opts, sizeof(uint32_t));
+ for (l = options; l; l = l->next) {
+ src = l->data;
+ for (i = 0; i < num_opts; i++) {
+ if (opts[i] == src->key)
+ break;
+ }
+ if (i == num_opts) {
+ if (!(srci = sr_config_info_get(src->key)))
+ /* Shouldn't happen. */
+ sr_err("Invalid option %d.", src->key);
+ else
+ sr_err("Invalid option '%s'.", srci->id);
+ ret = SR_ERR_ARG;
+ break;
+ }
+ if (sr_variant_type_check(src->key, src->data) != SR_OK) {
+ ret = SR_ERR_ARG;
+ break;
+ }
+ }
+ g_variant_unref(gvar_opts);
+
+ return ret;
+}
+