When building with W=1: arch/m68k/hp300/time.c:101:13: warning: no previous prototype for ‘hp300_sched_init’ [-Wmissing-prototypes] 101 | void __init hp300_sched_init(void) | ^~~~~~~~~~~~~~~~ Fix this by including "time.h". Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> --- arch/m68k/hp300/time.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/m68k/hp300/time.c b/arch/m68k/hp300/time.c index 1d1b7b3b5dd41583..72621fb9f3e663bd 100644 --- a/arch/m68k/hp300/time.c +++ b/arch/m68k/hp300/time.c @@ -20,6 +20,8 @@ #include <asm/traps.h> #include <asm/blinken.h> +#include "time.h" + static u64 hp300_read_clk(struct clocksource *cs); static struct clocksource hp300_clk = { -- 2.34.1