On Tue, Dec 14, 2010 at 11:16:45AM -0500, Alan Stern wrote: > I'm not familiar with the details of how the i2c subsystem works. But > in general, the subsystem code should call pm_runtime_set_active() > for every device before registering it. Then if a driver doesn't use > any runtime-PM functions, pm_runtime_suspended() will return false. Hrm, if that's the case then we also need to update at least the platform and SPI buses. Though looking at the documentation this is going to get a bit interesting as there's a requirement that the parent has runtime PM enabled on it... It's certainly not terribly apparent from the documentation. It'd be really helpful if it were clearer what noop buses like this were supposed to do to get runtime PM working. _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
