hwdriver.c: Fix two scan-build warnings.

[libsigrok.git] / src / hardware / dreamsourcelab-dslogic / api.c

diff --git a/src/hardware/dreamsourcelab-dslogic/api.c b/src/hardware/dreamsourcelab-dslogic/api.c
index 66c810372efd583880697b1724820cff39ea1b15..66c4dc73e0b98c51a4952ee1f9914c14e9edbf3c 100644 (file)
--- a/src/hardware/dreamsourcelab-dslogic/api.c
+++ b/src/hardware/dreamsourcelab-dslogic/api.c
@@ -214,10 +214,11 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
                        continue;
                }
 
-               usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
-
                libusb_close(hdl);
 
+               if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
+                       continue;
+
                prof = NULL;
                for (j = 0; supported_device[j].vid; j++) {
                        if (des.idVendor == supported_device[j].vid &&
@@ -359,8 +360,10 @@ static int dev_open(struct sr_dev_inst *sdi)
                devc->cur_samplerate = devc->samplerates[0];
        }
 
-       if (devc->cur_threshold == 0.0)
+       if (devc->cur_threshold == 0.0) {
                devc->cur_threshold = thresholds[1][0];
+               return dslogic_set_voltage_threshold(sdi, devc->cur_threshold);
+       }
 
        return SR_OK;
 }
@@ -514,12 +517,16 @@ static int config_list(uint32_t key, GVariant **data,
        case SR_CONF_DEVICE_OPTIONS:
                return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
        case SR_CONF_VOLTAGE_THRESHOLD:
+               if (!devc || !devc->profile)
+                       return SR_ERR_ARG;
                if (!strcmp(devc->profile->model, "DSLogic"))
                        *data = std_gvar_thresholds(ARRAY_AND_SIZE(thresholds));
                else
                        *data = std_gvar_min_max_step_thresholds(0.0, 5.0, 0.1);
                break;
        case SR_CONF_SAMPLERATE:
+               if (!devc)
+                       return SR_ERR_ARG;
                *data = std_gvar_samplerates(devc->samplerates, devc->num_samplerates);
                break;
        case SR_CONF_TRIGGER_MATCH: