linux-next-20080528/drivers/xen/manage.c: In function 'xen_suspend':
linux-next-20080528/drivers/xen/manage.c:43: error: implicit declaration of function 'device_power_down'
linux-next-20080528/drivers/xen/manage.c:65: error: implicit declaration of function 'device_power_up'
linux-next-20080528/drivers/xen/manage.c: In function 'do_suspend':
linux-next-20080528/drivers/xen/manage.c:114: error: implicit declaration of function 'device_resume'
make[3]: *** [drivers/xen/manage.o] Error 1