- struct drv_context *drvc;
- struct sr_config *src;
- GSList *l, *devices;
- GDir *dir;
- int ret;
- const gchar *dev_name;
- gchar *port = NULL;
- gchar *serialcomm = NULL;
-
- drvc = di->priv;
-
- for (l = options; l; l = l->next) {
- src = l->data;
- switch (src->key) {
- case SR_CONF_CONN:
- port = (char *)g_variant_get_string(src->data, NULL);
- break;
- case SR_CONF_SERIALCOMM:
- serialcomm = (char *)g_variant_get_string(src->data, NULL);
- break;
- }
- }
-
- devices = NULL;
- if (port) {
- if (probe_port(port, serialcomm, &devices) == SR_ERR_MALLOC) {
- g_free(port);
- if (serialcomm)
- g_free(serialcomm);
- return NULL;
- }
- } else {
- if (!(dir = g_dir_open("/sys/class/usbmisc/", 0, NULL)))
- if (!(dir = g_dir_open("/sys/class/usb/", 0, NULL)))
- return NULL;
- while ((dev_name = g_dir_read_name(dir))) {
- if (strncmp(dev_name, "usbtmc", 6))
- continue;
- port = g_strconcat("/dev/", dev_name, NULL);
- ret = probe_port(port, serialcomm, &devices);
- g_free(port);
- if (serialcomm)
- g_free(serialcomm);
- if (ret == SR_ERR_MALLOC) {
- g_dir_close(dir);
- return NULL;
- }
- }
- g_dir_close(dir);
- }
-
- /* Tack a copy of the newly found devices onto the driver list. */
- l = g_slist_copy(devices);
- drvc->instances = g_slist_concat(drvc->instances, l);
-
- return devices;