Add support for USB device without usb_set_configuration() and

without usb_claim_interface(). Looks like needed on Windows 7.


git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@2994 7ae35d74-ebe9-4afe-98af-79ac388436b8

kit/si570avrusb.c

@@ -226,8 +226,10 @@ int si570avrusb_init(RIG *rig)
 
 	rp->parm.usb.vid = USBDEV_SHARED_VID;
 	rp->parm.usb.pid = USBDEV_SHARED_PID;
+
+	/* no usb_set_configuration() and usb_claim_interface() */
+	rp->parm.usb.iface = -1;
 	rp->parm.usb.conf = 1;
-	rp->parm.usb.iface = 0;
 	rp->parm.usb.alt = 0;	/* necessary ? */
 
 	rp->parm.usb.vendor_name = VENDOR_NAME;

src/usb_port.c

@@ -189,6 +189,8 @@ int usb_port_open(hamlib_port_t *port)
     usb_detach_kernel_driver_np(udh, port->parm.usb.iface);
 #endif
 
+    if (port->parm.usb.iface >= 0) {
+
 #ifdef _WIN32
       if (usb_set_configuration (udh, port->parm.usb.conf) < 0){
         rig_debug(RIG_DEBUG_ERR, "%s: usb_set_configuration: failed conf %d: %s\n",
@@ -217,6 +219,8 @@ int usb_port_open(hamlib_port_t *port)
       }
 #endif
 
+    }
+
   port->handle = (void*) udh;
 
   return RIG_OK;