X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Ffx2lafw%2Fprotocol.c;h=12fc9e2c061166405b494ad813c6c704d146d1fe;hb=803db07a1af036a5da65581ddbac23b7f84a4388;hp=11e3504e7948b7b6a8899fe51f9e601d85181ab5;hpb=55462b8ba9f48931de9b9a7bfbc182a1d113b3b5;p=libsigrok.git

diff --git a/src/hardware/fx2lafw/protocol.c b/src/hardware/fx2lafw/protocol.c
index 11e3504e..12fc9e2c 100644
--- a/src/hardware/fx2lafw/protocol.c
+++ b/src/hardware/fx2lafw/protocol.c
@@ -18,6 +18,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <config.h>
 #include <glib.h>
 #include <glib/gstdio.h>
 #include "protocol.h"
@@ -156,8 +157,7 @@ SR_PRIV gboolean match_manuf_prod(libusb_device *dev, const char *manufacturer,
 	ret = FALSE;
 	while (!ret) {
 		/* Assume the FW has not been loaded, unless proven wrong. */
-		if (libusb_get_device_descriptor(dev, &des) != 0)
-			break;
+		libusb_get_device_descriptor(dev, &des);
 
 		if (libusb_open(dev, &hdl) != 0)
 			break;
@@ -194,7 +194,7 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 	uint8_t revid;
 	char connection_id[64];
 
-	drvc = di->priv;
+	drvc = di->context;
 	devc = sdi->priv;
 	usb = sdi->conn;
 
@@ -210,11 +210,7 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 	}
 
 	for (i = 0; i < device_count; i++) {
-		if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
-			sr_err("Failed to get device descriptor: %s.",
-			       libusb_error_name(ret));
-			continue;
-		}
+		libusb_get_device_descriptor(devlist[i], &des);
 
 		if (des.idVendor != devc->profile->vid
 		    || des.idProduct != devc->profile->pid)
@@ -244,6 +240,16 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 			break;
 		}
 
+		if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
+			if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) {
+				if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
+					sr_err("Failed to detach kernel driver: %s.",
+						libusb_error_name(ret));
+					return SR_ERR;
+				}
+			}
+		}
+
 		ret = command_get_fw_version(usb->devhdl, &vi);
 		if (ret != SR_OK) {
 			sr_err("Failed to get firmware version.");