X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fscpi%2Fscpi_usbtmc_libusb.c;h=3dd622a2e44829c007fda3670103508e4ff5eb1d;hb=f227338297de002d8a76dc5e411dde8743751028;hp=0b14cb3f89da912e8eecf039cc83c62384f79ce9;hpb=e40e9ca28d81d5ac43e1cb306390cfb7463b89e8;p=libsigrok.git

diff --git a/src/scpi/scpi_usbtmc_libusb.c b/src/scpi/scpi_usbtmc_libusb.c
index 0b14cb3f..3dd622a2 100644
--- a/src/scpi/scpi_usbtmc_libusb.c
+++ b/src/scpi/scpi_usbtmc_libusb.c
@@ -106,6 +106,7 @@ static struct usbtmc_blacklist blacklist_remote[] = {
 	{ 0x1ab1, 0x0588 },  /* Rigol DS1000 series */
 	{ 0x1ab1, 0x04b0 },  /* Rigol DS2000 series */
 	{ 0x0957, 0x0588 },  /* Agilent DSO1000 series (rebadged Rigol DS1000) */
+	{ 0x0b21, 0xffff },  /* All Yokogawa devices */
 	ALL_ZERO
 };
 
@@ -192,7 +193,8 @@ static int check_usbtmc_blacklist(struct usbtmc_blacklist *blacklist,
 	int i;
 
 	for (i = 0; blacklist[i].vid; i++) {
-		if (blacklist[i].vid == vid && blacklist[i].pid == pid)
+		if ((blacklist[i].vid == vid && blacklist[i].pid == 0xFFFF) ||
+			(blacklist[i].vid == vid && blacklist[i].pid == pid))
 			return TRUE;
 	}
 
@@ -299,7 +301,7 @@ static int scpi_usbtmc_libusb_open(struct sr_scpi_dev_inst *scpi)
 	struct libusb_config_descriptor *confdes;
 	const struct libusb_interface_descriptor *intfdes;
 	const struct libusb_endpoint_descriptor *ep;
-	int confidx, intfidx, epidx, config = 0;
+	int confidx, intfidx, epidx, config = 0, current_config;
 	uint8_t capabilities[24];
 	int ret, found = 0;
 
@@ -367,10 +369,13 @@ static int scpi_usbtmc_libusb_open(struct sr_scpi_dev_inst *scpi)
 		uscpi->detached_kernel_driver = 1;
 	}
 
-	if ((ret = libusb_set_configuration(usb->devhdl, config)) < 0) {
-		sr_err("Failed to set configuration: %s.",
-		       libusb_error_name(ret));
-		return SR_ERR;
+	if (libusb_get_configuration(usb->devhdl, &current_config) == 0
+	    && current_config != config) {
+		if ((ret = libusb_set_configuration(usb->devhdl, config)) < 0) {
+			sr_err("Failed to set configuration: %s.",
+			       libusb_error_name(ret));
+			return SR_ERR;
+		}
 	}
 
 	if ((ret = libusb_claim_interface(usb->devhdl, uscpi->interface)) < 0) {
@@ -619,26 +624,11 @@ static int scpi_usbtmc_libusb_close(struct sr_scpi_dev_inst *scpi)
 {
 	struct scpi_usbtmc_libusb *uscpi = scpi->priv;
 	struct sr_usb_dev_inst *usb = uscpi->usb;
-	struct libusb_device *dev;
-	struct libusb_device_descriptor des;
 	int ret;
 
 	if (!usb->devhdl)
 		return SR_ERR;
 
-	dev = libusb_get_device(usb->devhdl);
-	libusb_get_device_descriptor(dev, &des);
-	if (des.idVendor == 0x1ab1 && des.idProduct == 0x0588
-			&& scpi->firmware_version >= 24) {
-		/* Rigol DS1000 with firmware > 0.2.4 needs this. */
-		if ((ret = libusb_clear_halt(usb->devhdl, uscpi->bulk_in_ep)) < 0)
-			sr_err("Failed to clear halt/stall condition for EP %d: %s.",
-			       uscpi->bulk_out_ep, libusb_error_name(ret));
-		if ((ret = libusb_clear_halt(usb->devhdl, uscpi->bulk_out_ep)) < 0)
-			sr_err("Failed to clear halt/stall condition for EP %d: %s.",
-			       uscpi->bulk_out_ep, libusb_error_name(ret));
-	}
-
 	scpi_usbtmc_local(uscpi);
 
 	if ((ret = libusb_release_interface(usb->devhdl, uscpi->interface)) < 0)