During August 2025, Luciano Coelho contributed to the torvalds/linux repository by refactoring firmware macro definitions in the DRM/firmware path. He migrated the FW_BLC_SELF_* macros to use the REG_BIT() macro, a change aimed at improving type safety and preventing negative values from being assigned to unsigned integers. This update addressed a subtle but important bug risk in kernel development, aligning the code with established kernel macro safety practices. Luciano’s work, implemented in C and focused on hardware interfacing, resulted in a minimal yet effective code change that enhanced maintainability and future-proofed macro handling in the Linux kernel codebase.