Worked on enhancing the reliability of the input subsystem in the canonical/mir repository by addressing a bug in the evdev device watcher cleanup path. Focused on embedded systems and Linux kernel development using C++, the work involved ensuring that device watchers were properly removed when devices were detached, preventing lingering watchers that previously caused re-attachment failures. The solution leveraged device numbers for accurate identification during cleanup, improving runtime stability in multi-device environments. This targeted fix not only reduced support and debugging overhead but also resulted in clearer, more maintainable code, with direct commit references to facilitate future auditing and troubleshooting.