Am Dienstag, 25. August 2020, 13:28:53 CEST schrieb kernel test robot: Hi, > All warnings (new ones prefixed by >>): > >> drivers/char/lrng/lrng_drng.c:381:6: warning: no previous prototype for > >> 'lrng_reset' [-Wmissing-prototypes] > 381 | void lrng_reset(void) > > | ^~~~~~~~~~ The prototype is covered in an ifdef in lrng_internal.h as it is only needed for a specific configuration. I have moved the prototype out of that configuration conditional now. Thanks. Ciao Stephan