X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fhantek-dso%2Fdso.c;h=8561ac3ded1494474bd48564cee18cc15e734874;hb=8e2d6c9db788785466d61fdac4d8fdc1535bc20c;hp=7a2d2379dd736f01b837d70f0ccf23a823a83f1c;hpb=515ab0889ebde4b373d620044a1a98da37153056;p=libsigrok.git

diff --git a/src/hardware/hantek-dso/dso.c b/src/hardware/hantek-dso/dso.c
index 7a2d2379..8561ac3d 100644
--- a/src/hardware/hantek-dso/dso.c
+++ b/src/hardware/hantek-dso/dso.c
@@ -19,13 +19,16 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <config.h>
 #include <string.h>
 #include <glib.h>
 #include <libusb.h>
-#include "libsigrok.h"
+#include <libsigrok/libsigrok.h>
 #include "libsigrok-internal.h"
 #include "dso.h"
 
+#define NUM_CHANNELS 2
+
 extern struct sr_dev_driver hantek_dso_driver_info;
 
 static int send_begin(const struct sr_dev_inst *sdi)
@@ -73,8 +76,7 @@ static int dso_getmps(libusb_device *dev)
 	const struct libusb_interface_descriptor *intf_dsc;
 	int mps;
 
-	if (libusb_get_device_descriptor(dev, &des) != 0)
-		return 0;
+	libusb_get_device_descriptor(dev, &des);
 
 	if (des.bNumConfigurations != 1)
 		return 0;
@@ -109,7 +111,7 @@ err:
 SR_PRIV int dso_open(struct sr_dev_inst *sdi)
 {
 	struct dev_context *devc;
-	struct drv_context *drvc = hantek_dso_driver_info.priv;
+	struct drv_context *drvc = hantek_dso_driver_info.context;
 	struct sr_usb_dev_inst *usb;
 	struct libusb_device_descriptor des;
 	libusb_device **devlist;
@@ -125,11 +127,7 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi)
 
 	libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 	for (i = 0; devlist[i]; i++) {
-		if ((err = libusb_get_device_descriptor(devlist[i], &des))) {
-			sr_err("Failed to get device descriptor: %s.",
-			       libusb_error_name(err));
-			continue;
-		}
+		libusb_get_device_descriptor(devlist[i], &des);
 
 		if (des.idVendor != devc->profile->fw_vid
 		    || des.idProduct != devc->profile->fw_pid)
@@ -225,7 +223,7 @@ static int get_channel_offsets(const struct sr_dev_inst *sdi)
 	 * since that's how voltage offsets are submitted back to the DSO.
 	 * Convert to host order now, so we can use them natively.
 	 */
-	for (chan = 0; chan < 2; chan++) {
+	for (chan = 0; chan < NUM_CHANNELS; chan++) {
 		for (v = 0; v < 9; v++) {
 			devc->channel_levels[chan][v][0] =
 				g_ntohs(devc->channel_levels[chan][v][0]);
@@ -236,7 +234,7 @@ static int get_channel_offsets(const struct sr_dev_inst *sdi)
 
 	if (sr_log_loglevel_get() >= SR_LOG_DBG) {
 		gs = g_string_sized_new(128);
-		for (chan = 0; chan < 2; chan++) {
+		for (chan = 0; chan < NUM_CHANNELS; chan++) {
 			g_string_printf(gs, "CH%d:", chan + 1);
 			for (v = 0; v < 9; v++) {
 				g_string_append_printf(gs, " %.4x-%.4x",