The Linux operating system is undergoing continual evolution. Evolution in the kernel and generic driver modules often triggers the need for corresponding evolutions in specific device drivers. Such collateral evolutions are tedious, because of the large number of device drivers, and error-prone, because of the complexity of the code modifications involved. We propose an automatic tool, Coccinelle, to aid in the driver evolution process. In this talk, we examine some recent evolutions in Linux and the collateral evolutions they trigger, and assess the corresponding requirements on Coccinelle.