- if (!(dev = g_try_malloc0(sizeof(struct sr_dev)))) {
- sr_err("dev: %s: dev malloc failed", __func__);
- return NULL;
+ ret = SR_ERR_ARG;
+ for (l = sdi->channels; l; l = l->next) {
+ ch = l->data;
+ if (ch->index == channelnum) {
+ old_trigger = ch->trigger;
+ ret = SR_OK;
+ if (g_strcmp0(trigger, old_trigger) == 0)
+ break;
+ /* Set new trigger if it has changed. */
+ ch->trigger = g_strdup(trigger);
+
+ if (sdi->driver && sdi->driver->config_channel_set) {
+ ret = sdi->driver->config_channel_set(
+ sdi, ch, SR_CHANNEL_SET_TRIGGER);
+ /* Roll back change if it wasn't applicable. */
+ if (ret == SR_ERR_ARG) {
+ g_free(ch->trigger);
+ ch->trigger = old_trigger;
+ break;
+ }
+ }
+ g_free(old_trigger);
+ break;
+ }