From: Johannes Berg <johannes.berg@xxxxxxxxx> commit 1fb1abc83636f5329c26cd29f0f19f3faeb697a5 upstream. uml_pm_wake() is unconditionally called from the SIGUSR1 wakeup handler since that's in the userspace portion of UML, and thus a bit tricky to ifdef out. Since pm_system_wakeup() can always be called (but may be an empty inline), also simply always have uml_pm_wake() to fix the build. Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> # build-tested Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> Signed-off-by: Richard Weinberger <richard@xxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/um/kernel/um_arch.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -387,12 +387,12 @@ void text_poke_sync(void) { } -#ifdef CONFIG_PM_SLEEP void uml_pm_wake(void) { pm_system_wakeup(); } +#ifdef CONFIG_PM_SLEEP static int init_pm_wake_signal(void) { /*