X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fhameg-hmo%2Fapi.c;h=92f5ab673a96fa4d48f94c7509465b90dd513f37;hb=d5a61aaf2d634c4558bda225e64e720104a0203f;hp=b89de8d8a096a393b07cf15f8c4bbd8f3b23435c;hpb=c2fdcc25a47c4c8f25e3ea96ea36a674a151e839;p=libsigrok.git

diff --git a/src/hardware/hameg-hmo/api.c b/src/hardware/hameg-hmo/api.c
index b89de8d8..92f5ab67 100644
--- a/src/hardware/hameg-hmo/api.c
+++ b/src/hardware/hameg-hmo/api.c
@@ -24,7 +24,7 @@
 
 #define SERIALCOMM "115200/8n1/flow=1"
 
-SR_PRIV struct sr_dev_driver hameg_hmo_driver_info;
+static struct sr_dev_driver hameg_hmo_driver_info;
 
 static const char *manufacturers[] = {
 	"HAMEG",
@@ -189,9 +189,11 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
 	const struct scope_config *model;
 	struct scope_state *state;
 
-	if (!sdi || !(devc = sdi->priv))
+	if (!sdi)
 		return SR_ERR_ARG;
 
+	devc = sdi->priv;
+
 	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 		return SR_ERR;
 
@@ -318,9 +320,11 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
 	double tmp_d;
 	gboolean update_sample_rate;
 
-	if (!sdi || !(devc = sdi->priv))
+	if (!sdi)
 		return SR_ERR_ARG;
 
+	devc = sdi->priv;
+
 	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 		return SR_ERR;
 
@@ -483,7 +487,8 @@ static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *
 	struct dev_context *devc = NULL;
 	const struct scope_config *model = NULL;
 
-	if (sdi && (devc = sdi->priv)) {
+	if (sdi) {
+		devc = sdi->priv;
 		if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
 			return SR_ERR;
 
@@ -700,6 +705,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 	struct sr_channel *ch;
 	struct dev_context *devc;
 	struct sr_scpi_dev_inst *scpi;
+	int ret;
 
 	if (sdi->status != SR_ST_ACTIVE)
 		return SR_ERR_DEV_CLOSED;
@@ -729,22 +735,29 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 	if (hmo_check_channels(devc->enabled_channels) != SR_OK) {
 		sr_err("Invalid channel configuration specified!");
-		return SR_ERR_NA;
+		ret = SR_ERR_NA;
+		goto free_enabled;
 	}
 
 	if (hmo_setup_channels(sdi) != SR_OK) {
 		sr_err("Failed to setup channel configuration!");
-		return SR_ERR;
+		ret = SR_ERR;
+		goto free_enabled;
 	}
 
 	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
 			hmo_receive_data, (void *)sdi);
 
-	std_session_send_df_header(sdi, LOG_PREFIX);
+	std_session_send_df_header(sdi);
 
 	devc->current_channel = devc->enabled_channels;
 
 	return hmo_request_data(sdi);
+
+free_enabled:
+	g_slist_free(devc->enabled_channels);
+	devc->enabled_channels = NULL;
+	return ret;
 }
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
@@ -752,7 +765,7 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 	struct dev_context *devc;
 	struct sr_scpi_dev_inst *scpi;
 
-	std_session_send_df_end(sdi, LOG_PREFIX);
+	std_session_send_df_end(sdi);
 
 	if (sdi->status != SR_ST_ACTIVE)
 		return SR_ERR_DEV_CLOSED;
@@ -768,7 +781,7 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 	return SR_OK;
 }
 
-SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
+static struct sr_dev_driver hameg_hmo_driver_info = {
 	.name = "hameg-hmo",
 	.longname = "Hameg HMO",
 	.api_version = 1,
@@ -786,3 +799,4 @@ SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
 	.dev_acquisition_stop = dev_acquisition_stop,
 	.context = NULL,
 };
+SR_REGISTER_DEV_DRIVER(hameg_hmo_driver_info);