From: Arnd Bergmann <arnd@xxxxxxxx> The arch_resume_nosmt() has a __weak definition, plus an x86 specific override, but no prototype that ensures the two have the same arguments. This causes a W=1 warning: arch/x86/power/hibernate.c:189:5: error: no previous prototype for 'arch_resume_nosmt' [-Werror=missing-prototypes] Add the prototype in linux/suspend.h, which is included in both places. Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- include/linux/suspend.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/suspend.h b/include/linux/suspend.h index f16653f7be32..bc911fecb8e8 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -472,6 +472,8 @@ static inline int hibernate_quiet_exec(int (*func)(void *data), void *data) { } #endif /* CONFIG_HIBERNATION */ +int arch_resume_nosmt(void); + #ifdef CONFIG_HIBERNATION_SNAPSHOT_DEV int is_hibernate_resume_dev(dev_t dev); #else -- 2.39.2