Error: Cannot open file drivers/fwctl/Kconfig Error: Cannot open file drivers/fwctl/Makefile Error: Cannot open file drivers/fwctl/main.c Error: Cannot open file include/linux/fwctl.h drivers/fwctl/main.c:113: warning: No description found for return value of 'fwctl_register' New warnings added 1,4c1 < Error: Cannot open file drivers/fwctl/Kconfig < Error: Cannot open file drivers/fwctl/Makefile < Error: Cannot open file drivers/fwctl/main.c < Error: Cannot open file include/linux/fwctl.h --- > drivers/fwctl/main.c:113: warning: No description found for return value of 'fwctl_register' Per-file breakdown