When building with W=1: arch/m68k/kernel/vectors.c:74:13: warning: no previous prototype for ‘trap_init’ [-Wmissing-prototypes] 74 | void __init trap_init (void) | ^~~~~~~~~ Fix this by including <linux/cpu.h>. Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Acked-by: Arnd Bergmann <arnd@xxxxxxxx> --- v2: - Add Acked-by. --- arch/m68k/kernel/vectors.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/m68k/kernel/vectors.c b/arch/m68k/kernel/vectors.c index 322c977bb9ecfbee..68762fc1dc97b4e1 100644 --- a/arch/m68k/kernel/vectors.c +++ b/arch/m68k/kernel/vectors.c @@ -17,6 +17,7 @@ /* * Sets up all exception vectors */ +#include <linux/cpu.h> #include <linux/sched.h> #include <linux/kernel.h> #include <linux/linkage.h> -- 2.34.1