On Thu, Jun 6, 2019 at 4:17 PM Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> wrote: > > On Thu, Jun 06, 2019 at 04:08:11PM +0200, Rafael J. Wysocki wrote: > > That isn't necessary IMO as long as the device are not accessed. If > > the kernel thinks that a given device is in D3cold and doesn't access > > it, then it really doesn't matter too much what state the device is in > > physically. On the first access the device should be reinitialized > > anyway. > > But if the device is configured to wake. For example when it detects a > hotplug that state is gone when it goes to D0unitialized. For this we'll need a pm_runtime_resume() of the dependent device on the resource going "on". That means we need a list of devices to resume when the resource goes "on" after being taken "off".
