DEBUG - genode_c_api USB session releasing - part VII

Issue genodelabs#5500

Author: alex-ab

repos/dde_linux/src/lib/lx_emul/usb.c

@@ -184,33 +184,56 @@ handle_control_request(genode_usb_request_handle_t handle,
 		struct usb_host_interface *alt =
 			iface ? usb_altnum_to_altsetting(iface, ctrl_value) : NULL;
 
-		if (iface && iface->cur_altsetting != alt)
+		if (iface && iface->cur_altsetting != alt) {
+			printk("%s:%u in\n", __func__, __LINE__);
 			ret = usb_set_interface(udev, ctrl_index, ctrl_value);
+			printk("%s:%u in\n", __func__, __LINE__);
+		}
 
 		send_msg = false;
 	}
 
+	printk("%s:%u in\n", __func__, __LINE__);
+
 	/* check for set device configuration request */
 	if (ctrl_request == USB_REQ_SET_CONFIGURATION &&
 	    ctrl_request_type == USB_RECIP_DEVICE) {
 		if (!(udev->actconfig &&
-		      udev->actconfig->desc.bConfigurationValue == ctrl_value))
+		      udev->actconfig->desc.bConfigurationValue == ctrl_value)) {
+
+			printk("%s:%u in\n", __func__, __LINE__);
+
 			ret = usb_set_configuration(udev, ctrl_value);
+
+			printk("%s:%u in\n", __func__, __LINE__);
+		}
 		send_msg = false;
 	}
 
+	printk("%s:%u in\n", __func__, __LINE__);
+
 	/* otherwise send control message */
 	if (send_msg) {
 		int pipe = (ctrl_request_type & 0x80)
 			? usb_rcvctrlpipe(udev, 0) : usb_sndctrlpipe(udev, 0);
 
+		printk("%s:%u in\n", __func__, __LINE__);
+
 			usb_unlock_device(udev);
+
+		printk("%s:%u in\n", __func__, __LINE__);
+
 			ret = usb_control_msg(udev, pipe, ctrl_request, ctrl_request_type,
 			                      ctrl_value, ctrl_index, payload.addr,
 			                      payload.size, ctrl_timeout);
+
+		printk("%s:%u in\n", __func__, __LINE__);
+
 			usb_lock_device(udev);
 	}
 
+	printk("%s:%u in\n", __func__, __LINE__);
+
 	size = ret < 0 ? 0 : ret;
 	genode_usb_ack_request(handle, handle_return_code(ret < 0 ? ret : 0),
 	                       &size);