During July 2025, Pasic focused on enhancing the reliability of the geerlingguy/linux ISM driver by addressing concurrency-related defects in the Linux kernel. He implemented a spinlock-based serialization mechanism within the ism_cmd() function, ensuring that only one command executes at a time and preventing data corruption and device error states. This targeted fix resolved persistent PEC 2 and PEC 3A errors, directly improving system uptime for ISM hardware users. Working primarily in C, Pasic demonstrated expertise in concurrency management, device driver development, and low-level kernel synchronization, delivering a robust solution that improved the stability and reliability of the ISM driver.