Tianze Zhang contributed to the geerlingguy/linux repository by addressing a build system issue affecting kernel development workflows. He focused on improving the Makefile logic to ensure that generated ARM and ARM64 assembly files in lib/crypto were reliably removed during the make clean process. By eliminating conditional checks that previously left stale *.S files behind, Tianze enhanced cross-architecture build hygiene and improved CI reliability. His work, implemented using Makefile and build system expertise, resolved a problem that could cause build failures and inconsistencies, resulting in more reproducible and maintainable builds for developers working across multiple architectures in the repository.