hwdriver.c: Fix two scan-build warnings.

[libsigrok.git] / src / hardware / agilent-dmm / api.c

diff --git a/src/hardware/agilent-dmm/api.c b/src/hardware/agilent-dmm/api.c
index b03a9e986508332c91afbfbbe8f078745c273f00..c410b37c02a02276810f9f40e9e2c1655057f007 100644 (file)
--- a/src/hardware/agilent-dmm/api.c
+++ b/src/hardware/agilent-dmm/api.c
@@ -183,25 +183,22 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
        return std_scan_complete(di, devices);
 }
 
-static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_get(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
-       int ret;
 
        (void)cg;
 
        devc = sdi->priv;
 
-       ret = SR_OK;
        switch (key) {
        case SR_CONF_SAMPLERATE:
                *data = g_variant_new_uint64(devc->cur_samplerate);
                break;
        case SR_CONF_LIMIT_SAMPLES:
        case SR_CONF_LIMIT_MSEC:
-               ret = sr_sw_limits_config_get(&devc->limits, key, data);
-               break;
+               return sr_sw_limits_config_get(&devc->limits, key, data);
        case SR_CONF_DATA_SOURCE:
                *data = g_variant_new_string(data_sources[devc->data_source]);
                break;
@@ -209,55 +206,44 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
                return SR_ERR_NA;
        }
 
-       return ret;
+       return SR_OK;
 }
 
-static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_set(uint32_t key, GVariant *data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
        struct dev_context *devc;
        uint64_t samplerate;
-       const char *tmp_str;
-       unsigned int i;
-       int ret;
+       int idx;
 
        (void)cg;
 
        devc = sdi->priv;
 
-       ret = SR_OK;
        switch (key) {
        case SR_CONF_SAMPLERATE:
                samplerate = g_variant_get_uint64(data);
                if (samplerate < samplerates[0] || samplerate > samplerates[1])
-                       ret = SR_ERR_ARG;
-               else
-                       devc->cur_samplerate = g_variant_get_uint64(data);
+                       return SR_ERR_ARG;
+               devc->cur_samplerate = g_variant_get_uint64(data);
                break;
        case SR_CONF_LIMIT_SAMPLES:
        case SR_CONF_LIMIT_MSEC:
-               ret = sr_sw_limits_config_set(&devc->limits, key, data);
-               break;
-       case SR_CONF_DATA_SOURCE: {
-               tmp_str = g_variant_get_string(data, NULL);
-               for (i = 0; i < ARRAY_SIZE(data_sources); i++)
-                       if (!strcmp(tmp_str, data_sources[i])) {
-                               devc->data_source = i;
-                               break;
-                       }
-               if (i == ARRAY_SIZE(data_sources))
-                       return SR_ERR;
+               return sr_sw_limits_config_set(&devc->limits, key, data);
+       case SR_CONF_DATA_SOURCE:
+               if ((idx = std_str_idx(data, ARRAY_AND_SIZE(data_sources))) < 0)
+                       return SR_ERR_ARG;
+               devc->data_source = idx;
                break;
-       }
        default:
-               ret = SR_ERR_NA;
+               return SR_ERR_NA;
        }
 
-       return ret;
+       return SR_OK;
 }
 
-static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
-               const struct sr_channel_group *cg)
+static int config_list(uint32_t key, GVariant **data,
+       const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 {
        switch (key) {
        case SR_CONF_SCAN_OPTIONS: