During July 2025, Yonglong Liu enhanced the geerlingguy/linux repository by refactoring the HNS3 network driver’s debugfs interface to use the seq_file API for efficient MAC address list handling and consolidated node management. He improved maintainability by removing unused functions and variables, streamlining the debugfs layer. Liu also addressed a reliability issue in the PTP initialization path, ensuring that interrupts are properly disabled and flags cleared after failures to prevent false reports on subsequent probes. His work demonstrated strong proficiency in C, Linux kernel development, and device driver engineering, delivering targeted improvements that support future extensibility and robust driver operation.