68     IOReturn kr;  in try_interfaces()  local
96     kr = (*dev)->CreateInterfaceIterator(dev, &request, &iterator);  in try_interfaces()
98     if (kr != 0) {  in try_interfaces()
99         ERR("Couldn't create a device interface iterator: (%08x)\n", kr);  in try_interfaces()
105         kr = IOCreatePlugInInterfaceForService(  in try_interfaces()
115         if ((kr != 0) || (!plugInInterface)) {  in try_interfaces()
116             WARN("Unable to create plugin (%08x)\n", kr);  in try_interfaces()
153         kr = (*interface)->USBInterfaceOpen(interface);  in try_interfaces()
155         if (kr != 0) {  in try_interfaces()
156             WARN("Could not open interface: (%08x)\n", kr);  in try_interfaces()
163         kr = (*interface)->GetNumEndpoints(interface, &interfaceNumEndpoints);  in try_interfaces()
165         if (kr != 0) {  in try_interfaces()
166             ERR("Unable to get number of endpoints: (%08x)\n", kr);  in try_interfaces()
191             kr = (*interface)->GetPipeProperties(interface, endpoint,  in try_interfaces()
195             if (kr == 0) {  in try_interfaces()
231                 kr = (*interface)->ClearPipeStallBothEnds(interface,  in try_interfaces()
233                 if (kr != 0) {  in try_interfaces()
234                     ERR("could not clear input pipe; result %x, ignoring...\n", kr);  in try_interfaces()
239                 kr = (*interface)->ClearPipeStallBothEnds(interface,  in try_interfaces()
241                 if (kr != 0) {  in try_interfaces()
242                     ERR("could not clear output pipe; result %x, ignoring....\n", kr);  in try_interfaces()
261     kern_return_t kr;  in try_device()  local
270     kr = IOCreatePlugInInterfaceForService(device,  in try_device()
275     if ((kr != 0) || (plugin == NULL)) {  in try_device()
276         ERR("Unable to create a plug-in (%08x)\n", kr);  in try_device()
296     kr = (*dev)->GetDeviceVendor(dev, &handle->info.dev_vendor);  in try_device()
297     if (kr != 0) {  in try_device()
302     kr = (*dev)->GetDeviceProduct(dev, &handle->info.dev_product);  in try_device()
303     if (kr != 0) {  in try_device()
308     kr = (*dev)->GetDeviceClass(dev, &handle->info.dev_class);  in try_device()
309     if (kr != 0) {  in try_device()
314     kr = (*dev)->GetDeviceSubClass(dev, &handle->info.dev_subclass);  in try_device()
315     if (kr != 0) {  in try_device()
320     kr = (*dev)->GetDeviceProtocol(dev, &handle->info.dev_protocol);  in try_device()
321     if (kr != 0) {  in try_device()
326     kr = (*dev)->GetLocationID(dev, &locationId);  in try_device()
327     if (kr != 0) {  in try_device()
333     kr = (*dev)->USBGetSerialNumberStringIndex(dev, &serialIndex);  in try_device()
346         kr = (*dev)->DeviceRequest(dev, &req);  in try_device()
348         if (kr == kIOReturnSuccess && req.wLenDone > 0) {  in try_device()