perl -pi -0777 -e 's/_disable\s*\(\s*struct dev \*dev\s*\)\s*{\s*struct nic \*nic.*?$/_disable ( struct nic *nic ) {/ms' *.c

perl -pi -0777 -e 's/_disable\s*\(\s*struct dev \*dev(\s*__unused)?\)\s*{/_disable ( struct nic *nic$1 ) {/ms' *.c