I think the original source code before you modify is the following.

#define CHECK_INTERFACE (interface, data, reply) \
do { if (!data.enforceI nterface(interf ace::getInterfa ceDes criptor())) { \
LOGW("Call incorrectly routed to " #interface); \
return PERMISSION_DENI ED; \
} } while (0)

What do you want to do and modify it?