ret = dev->driver->suspend(dev, state, SUSPEND_POWER_DOWN); 
ret = dev->driver->suspend(dev, state);  
static int ac97_bus_suspend(struct device *dev, pm_message_t state){	int ret = 0;	if (dev->driver && dev->driver->suspend)		ret = dev->driver->suspend(dev, state, SUSPEND_POWER_DOWN);	return ret;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/9480e307cd88ef09ec9294c7d97ebec18e6d2221/ac97_bus.c/buggy/sound/pci/ac97/ac97_bus.c