- struct kovaplus_device *kovaplus =
- hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
- return snprintf(buf, PAGE_SIZE, "%d\n", kovaplus->info.firmware_version);
+ struct kovaplus_device *kovaplus;
+ struct usb_device *usb_dev;
+ struct kovaplus_info info;
+
+ dev = dev->parent->parent;
+ kovaplus = hid_get_drvdata(dev_get_drvdata(dev));
+ usb_dev = interface_to_usbdev(to_usb_interface(dev));
+
+ mutex_lock(&kovaplus->kovaplus_lock);
+ roccat_common2_receive(usb_dev, KOVAPLUS_COMMAND_INFO,
+ &info, KOVAPLUS_SIZE_INFO);
+ mutex_unlock(&kovaplus->kovaplus_lock);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);