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rigol-ds1xx2: better error handling in hw_scan.

This commit is contained in:
Martin Ling 2013-04-21 13:17:40 +01:00
parent 8bb2981df0
commit d2e0b1fa71
1 changed files with 18 additions and 12 deletions
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28
hardware/rigol-ds1xx2/api.c
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@ -243,7 +243,7 @@ static GSList *hw_scan(GSList *options)
close(fd);
if (len == 0) {
g_free(device);
return NULL;
continue;
}
buf[len] = 0;
@ -256,7 +256,7 @@ static GSList *hw_scan(GSList *options)
if (num_tokens < 4) {
g_strfreev(tokens);
g_free(device);
return NULL;
continue;
}
manufacturer = tokens[0];
@ -266,7 +266,7 @@ static GSList *hw_scan(GSList *options)
if (strcmp(manufacturer, "Rigol Technologies")) {
g_strfreev(tokens);
g_free(device);
return NULL;
continue;
}
for (i = 0; i < ARRAY_SIZE(supported_models); i++) {
@ -281,7 +281,7 @@ static GSList *hw_scan(GSList *options)
manufacturer, model, version))) {
g_strfreev(tokens);
g_free(device);
return NULL;
continue;
}
g_strfreev(tokens);
@ -289,40 +289,46 @@ static GSList *hw_scan(GSList *options)
if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
sr_err("Device context malloc failed.");
g_free(device);
return NULL;
goto hw_scan_abort;
}
devc->limit_frames = 0;
devc->device = device;
devc->has_digital = has_digital;
sdi->priv = devc;
sdi->driver = di;
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
for (i = 0; i < 2; i++) {
if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
i == 0 ? "CH1" : "CH2")))
return NULL;
goto hw_scan_abort;
sdi->probes = g_slist_append(sdi->probes, probe);
}
if (devc->has_digital) {
for (i = 0; i < 16; i++) {
if (!(channel_name = g_strdup_printf("D%d", i)))
return NULL;
goto hw_scan_abort;
probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, channel_name);
g_free(channel_name);
if (!probe)
return NULL;
goto hw_scan_abort;
sdi->probes = g_slist_append(sdi->probes, probe);
}
}
drvc->instances = g_slist_append(drvc->instances, sdi);
devices = g_slist_append(devices, sdi);
}
g_dir_close(dir);
return devices;
hw_scan_abort:
g_dir_close(dir);
g_slist_free(devices);
clear_instances();
return NULL;
}
static GSList *hw_dev_list(void)