From: Soeren Apel <redacted>
Date: Sat, 27 Sep 2014 19:51:56 +0000 (+0200)
Subject: hantek-dso: Use physical USB connection instead of sdi->index
X-Git-Tag: libsigrok-0.4.0~932
X-Git-Url: http://sigrok.org/gitweb/?a=commitdiff_plain;h=395206f460cc4002feedca2265cf374b90c9c047;hp=ee4f9bb1bd554848f86e09bb99c0fa8356f21b60;p=libsigrok.git

hantek-dso: Use physical USB connection instead of sdi->index
---

diff --git a/src/hardware/hantek-dso/api.c b/src/hardware/hantek-dso/api.c
index e0e05df5..3ad928bd 100644
--- a/src/hardware/hantek-dso/api.c
+++ b/src/hardware/hantek-dso/api.c
@@ -158,7 +158,7 @@ static struct sr_dev_driver *di = &hantek_dso_driver_info;
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
 
-static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof)
+static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
 {
 	struct sr_dev_inst *sdi;
 	struct sr_channel *ch;
@@ -166,7 +166,7 @@ static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof
 	struct dev_context *devc;
 	int i;
 
-	sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING,
+	sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING,
 		prof->vendor, prof->model, NULL);
 	if (!sdi)
 		return NULL;
@@ -266,12 +266,12 @@ static GSList *scan(GSList *options)
 	GSList *l, *devices, *conn_devices;
 	struct libusb_device_descriptor des;
 	libusb_device **devlist;
-	int devcnt, ret, i, j;
+	int ret, i, j;
 	const char *conn;
+	char connection_id[64];
 
 	drvc = di->priv;
 
-	devcnt = 0;
 	devices = 0;
 
 	conn = NULL;
@@ -310,6 +310,8 @@ static GSList *scan(GSList *options)
 			continue;
 		}
 
+		usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
+
 		prof = NULL;
 		for (j = 0; dev_profiles[j].orig_vid; j++) {
 			if (des.idVendor == dev_profiles[j].orig_vid
@@ -317,7 +319,8 @@ static GSList *scan(GSList *options)
 				/* Device matches the pre-firmware profile. */
 				prof = &dev_profiles[j];
 				sr_dbg("Found a %s %s.", prof->vendor, prof->model);
-				sdi = dso_dev_new(devcnt, prof);
+				sdi = dso_dev_new(prof);
+				sdi->connection_id = g_strdup(connection_id);
 				devices = g_slist_append(devices, sdi);
 				devc = sdi->priv;
 				if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
@@ -325,19 +328,18 @@ static GSList *scan(GSList *options)
 					/* Remember when the firmware on this device was updated */
 					devc->fw_updated = g_get_monotonic_time();
 				else
-					sr_err("Firmware upload failed for "
-					        "device %d.", devcnt);
+					sr_err("Firmware upload failed");
 				/* Dummy USB address of 0xff will get overwritten later. */
 				sdi->conn = sr_usb_dev_inst_new(
 						libusb_get_bus_number(devlist[i]), 0xff, NULL);
-				devcnt++;
 				break;
 			} else if (des.idVendor == dev_profiles[j].fw_vid
 				&& des.idProduct == dev_profiles[j].fw_pid) {
 				/* Device matches the post-firmware profile. */
 				prof = &dev_profiles[j];
 				sr_dbg("Found a %s %s.", prof->vendor, prof->model);
-				sdi = dso_dev_new(devcnt, prof);
+				sdi = dso_dev_new(prof);
+				sdi->connection_id = g_strdup(connection_id);
 				sdi->status = SR_ST_INACTIVE;
 				devices = g_slist_append(devices, sdi);
 				devc = sdi->priv;
@@ -345,7 +347,6 @@ static GSList *scan(GSList *options)
 				sdi->conn = sr_usb_dev_inst_new(
 						libusb_get_bus_number(devlist[i]),
 						libusb_get_device_address(devlist[i]), NULL);
-				devcnt++;
 				break;
 			}
 		}
diff --git a/src/hardware/hantek-dso/dso.c b/src/hardware/hantek-dso/dso.c
index da5eb121..b8304575 100644
--- a/src/hardware/hantek-dso/dso.c
+++ b/src/hardware/hantek-dso/dso.c
@@ -113,7 +113,8 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi)
 	struct sr_usb_dev_inst *usb;
 	struct libusb_device_descriptor des;
 	libusb_device **devlist;
-	int err, skip, i;
+	int err, i;
+	char connection_id[64];
 
 	devc = sdi->priv;
 	usb = sdi->conn;
@@ -122,7 +123,6 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi)
 		/* already in use */
 		return SR_ERR;
 
-	skip = 0;
 	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))) {
@@ -135,20 +135,14 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi)
 		    || des.idProduct != devc->profile->fw_pid)
 			continue;
 
-		if (sdi->status == SR_ST_INITIALIZING) {
-			if (skip != sdi->index) {
-				/* Skip devices of this type that aren't the one we want. */
-				skip += 1;
-				continue;
-			}
-		} else if (sdi->status == SR_ST_INACTIVE) {
+		if ((sdi->status == SR_ST_INITIALIZING) ||
+				(sdi->status == SR_ST_INACTIVE)) {
 			/*
-			 * This device is fully enumerated, so we need to find
-			 * this device by vendor, product, bus and address.
+			 * Check device by its physical USB bus/port address.
 			 */
-			if (libusb_get_bus_number(devlist[i]) != usb->bus
-				|| libusb_get_device_address(devlist[i]) != usb->address)
-				/* this is not the one */
+			usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
+			if (strcmp(sdi->connection_id, connection_id))
+				/* This is not the one. */
 				continue;
 		}
 
@@ -164,9 +158,10 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi)
 				sr_err("Wrong endpoint profile.");
 			else {
 				sdi->status = SR_ST_ACTIVE;
-				sr_info("Opened device %d on %d.%d interface %d.",
-					sdi->index, usb->bus,
-					usb->address, USB_INTERFACE);
+				sr_info("Opened device on %d.%d (logical) / "
+						"%s (physical) interface %d.",
+					usb->bus, usb->address,
+					sdi->connection_id, USB_INTERFACE);
 			}
 		} else {
 			sr_err("Failed to open device: %s.",
@@ -193,8 +188,8 @@ SR_PRIV void dso_close(struct sr_dev_inst *sdi)
 	if (usb->devhdl == NULL)
 		return;
 
-	sr_info("Closing device %d on %d.%d interface %d.", sdi->index,
-		usb->bus, usb->address, USB_INTERFACE);
+	sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
+			usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 	libusb_release_interface(usb->devhdl, USB_INTERFACE);
 	libusb_close(usb->devhdl);
 	usb->devhdl = NULL;