> So, what's the point of the sscanf() to check the *filename* other than > saving some potentially expensive request_firmware() calls? Not much point. There are two subsequent checks. First the driver checks the F-M-S in the header of the file ... so your dastardly user will be thwarted by this check. If an even more dastardly user edited the file to have the right F-M-S (and recomputed the file checksum) then the driver would be fooled, but microcode would see that the signed binary portion is not for this CPU and reject it. -Tony