Check for config key availability before using it.
[sigrok-cli.git] / main.c
diff --git a/main.c b/main.c
index 17076724388c7808bc9fa21d16fac1e7a8e46390..81dc4ad21055a11bfc6f199d1dff732e388eb620 100644 (file)
--- a/main.c
+++ b/main.c
@@ -50,13 +50,15 @@ static void logger(const gchar *log_domain, GLogLevelFlags log_level,
 int select_channels(struct sr_dev_inst *sdi)
 {
        struct sr_channel *ch;
-       GSList *selected_channels, *l;
+       GSList *selected_channels, *l, *channels;
+
+       channels = sr_dev_inst_channels_get(sdi);
 
        if (opt_channels) {
                if (!(selected_channels = parse_channelstring(sdi, opt_channels)))
                        return SR_ERR;
 
-               for (l = sdi->channels; l; l = l->next) {
+               for (l = channels; l; l = l->next) {
                        ch = l->data;
                        if (g_slist_find(selected_channels, ch))
                                ch->enabled = TRUE;
@@ -81,6 +83,7 @@ static void get_option(void)
        GHashTable *devargs;
        int ret;
        char *s;
+       struct sr_dev_driver *driver;
 
        if (!(devices = device_scan())) {
                g_critical("No devices found.");
@@ -89,6 +92,8 @@ static void get_option(void)
        sdi = devices->data;
        g_slist_free(devices);
 
+       driver = sr_dev_inst_driver_get(sdi);
+
        if (sr_dev_open(sdi) != SR_OK) {
                g_critical("Failed to open device.");
                return;
@@ -102,7 +107,7 @@ static void get_option(void)
                set_dev_options(sdi, devargs);
        else devargs = NULL;
 
-       if ((ret = sr_config_get(sdi->driver, sdi, cg, ci->key, &gvar)) != SR_OK)
+       if ((ret = sr_config_get(driver, sdi, cg, ci->key, &gvar)) != SR_OK)
                g_critical("Failed to get '%s': %s", opt_get, sr_strerror(ret));
        s = g_variant_print(gvar, FALSE);
        printf("%s\n", s);