On Fri, 27 Feb 2009, Pavel Machek wrote: > > > To summarize, we can: > > * Use a refcount such that automatic suspend will only be possible if it's > > equal to zero (but that need not be the only criterion). > > * Use a per-device flag in dev_pm_info that will be set whenever the device > > driver increases the refcount and unset whenever the driver decreases the > > refcount. > > * Use a per-process flag that will be set whenever the process increases the > > refcount and unset whenever the process decreases the refcount. > > Yes, that sounds sane, and that's how reasonable wakelock > implementation should look like. One small point: If you add a per-device flag and a per-process flag as described above, then drivers and processes must not acquire nested references. Obviously this is fixable, but it's worth mentioning... Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
