return sprintf(buf, "%u\n", dev->power.power_state); 
return sprintf(buf, "%u\n", dev->power.power_state.event); 
static ssize_t state_show(struct device * dev, struct device_attribute *attr, char * buf){	return sprintf(buf, "%u\n", dev->power.power_state);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/ca078bae813dd46c0f9b102fdfb4a3384641ff48/sysfs.c/buggy/drivers/base/power/sysfs.c