drivers: Remove some uneeded 'ret' variables.

[libsigrok.git] / src / hardware / link-mso19 / api.c

diff --git a/src/hardware/link-mso19/api.c b/src/hardware/link-mso19/api.c
index 7924b2311a2b1a4f72b056f37253682454243a8d..bd33d9f2c2ad451fad18236b444f82f8a866670d 100644 (file)
--- a/src/hardware/link-mso19/api.c
+++ b/src/hardware/link-mso19/api.c
@@ -180,8 +180,6 @@ static int dev_open(struct sr_dev_inst *sdi)
        if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
                return SR_ERR;
 
-       sdi->status = SR_ST_ACTIVE;
-
        /* FIXME: discard serial buffer */
        mso_check_trigger(devc->serial, &devc->trigger_state);
        sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
@@ -238,27 +236,21 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
 
        devc = sdi->priv;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
+       ret = SR_OK;
        switch (key) {
        case SR_CONF_SAMPLERATE:
                // FIXME
                return mso_configure_rate(sdi, g_variant_get_uint64(data));
-               ret = SR_OK;
-               break;
        case SR_CONF_LIMIT_SAMPLES:
                num_samples = g_variant_get_uint64(data);
                if (num_samples != 1024) {
                        sr_err("Only 1024 samples are supported.");
                        ret = SR_ERR_ARG;
-               } else {
-                       devc->limit_samples = num_samples;
-                       ret = SR_OK;
-               }
+                       break;
+               };
+               devc->limit_samples = num_samples;
                break;
        case SR_CONF_CAPTURE_RATIO:
-               ret = SR_OK;
                break;
        case SR_CONF_TRIGGER_SLOPE:
                slope = g_variant_get_string(data, NULL);
@@ -266,29 +258,25 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
                if (!slope || !(slope[0] == 'f' || slope[0] == 'r'))
                        sr_err("Invalid trigger slope");
                        ret = SR_ERR_ARG;
-               } else {
-                       devc->trigger_slope = (slope[0] == 'r')
-                               ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
-                       ret = SR_OK;
+                       break;
                }
+               devc->trigger_slope = (slope[0] == 'r')
+                       ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
                break;
        case SR_CONF_HORIZ_TRIGGERPOS:
                pos = g_variant_get_double(data);
                if (pos < 0 || pos > 255) {
                        sr_err("Trigger position (%f) should be between 0 and 255.", pos);
                        ret = SR_ERR_ARG;
-               } else {
-                       trigger_pos = (int)pos;
-                       devc->trigger_holdoff[0] = trigger_pos & 0xff;
-                       ret = SR_OK;
+                       break;
                }
+               trigger_pos = (int)pos;
+               devc->trigger_holdoff[0] = trigger_pos & 0xff;
                break;
        case SR_CONF_RLE:
-               ret = SR_OK;
                break;
        default:
                ret = SR_ERR_NA;
-               break;
        }
 
        return ret;
@@ -330,9 +318,6 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
        struct dev_context *devc;
        int ret = SR_ERR;
 
-       if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR_DEV_CLOSED;
-
        devc = sdi->priv;
 
        if (mso_configure_channels(sdi) != SR_OK) {
@@ -407,6 +392,7 @@ static struct sr_dev_driver link_mso19_driver_info = {
        .cleanup = std_cleanup,
        .scan = scan,
        .dev_list = std_dev_list,
+       .dev_clear = std_dev_clear,
        .config_get = config_get,
        .config_set = config_set,
        .config_list = config_list,