--- 05e6d313961e3e3ce9ed3a09126f80ba65f7daff
+++ 1a78cd135aba22be68c6694a0d0ad2f1d655abdc
@@ -120,7 +120,7 @@ int usb_choose_configuration(struct usb_
 		 * than a vendor-specific driver. */
 		else if (udev->descriptor.bDeviceClass !=
 						USB_CLASS_VENDOR_SPEC &&
-				(!desc || desc->bInterfaceClass !=
+				(desc && desc->bInterfaceClass !=
 						USB_CLASS_VENDOR_SPEC)) {
 			best = c;
 			break;