Please fix your email client to wrap lines after about 72 columns and not to insert excess blank lines. On Wed, 30 Jun 2010, Raj Kumar wrote: > Hi, > > I am working in power management. I have few questions about run time power management which was merged in linux 2.6.32 kernel onwards. > > > > Since the run time power management defines that when idle, suspend and resume will be scheduled, now the thing is from device driver perspective, > > > > it is bus driver that will suspend and resume its devices. but what from driver perspective driver needs to implement means as run time power management > > > > has also helper functions which will tell PM core that when to call various callbacks for suspend and resume for drivers (device, bus). > > > > But it might be case when the whole bus is not idle and still some drivers can be put into low power mode. > > > > Then does bus driver will be responsible for invoking the driver's suspend and resume (run time) or PM core will do that ? The PM core will invoke the bus driver's runtime_idle, runtime_suspend, and runtime_resume callback functions. These functions are then responsible for invoking the device driver's suspend and resume routines. Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
