sdi->channels = g_slist_append(sdi->channels, ch);
devc->analog_groups[i].name = channel_name;
devc->analog_groups[i].channels = g_slist_append(NULL, ch);
sdi->channels = g_slist_append(sdi->channels, ch);
devc->analog_groups[i].name = channel_name;
devc->analog_groups[i].channels = g_slist_append(NULL, ch);