On Thu, Feb 18, 2016 at 10:54:10AM +0200, Mika Westerberg wrote: > Linux already supports runtime PM of disks (drivers/scsi/sd.c) so that > after certain amount of idle time the disk is suspended automatically. This > series extends the support to AHCI host controllers. Whenever SATA ports > are determined to be idle (all children are runtime suspended) the host > controller is also suspended. > > On recent Intel CPUs like Broxton this allows the CPU to go low power idle > states like S0ix runtime (given that all necessary blocks are also in their > correesponding low power states). > > Patches [1-2/7] fix a lockup where disk is runtime suspended and the system > is put to sleep. They are independent of the rest of the series. > > Patch [3/7] makes it possible for SATA ports to be runtime suspended when > there is not disk connected. For example on Lenovo Yoga 900 there are two > SATA ports which only one of them has disk connected. This patch allows the > host controller to runtime suspend whenever the disk is idle. Applied to libata/for-4.6. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
