Am Montag, 22. Juni 2009 08:20:43 schrieb Magnus Damm: > I'd like to call pm_request_suspend() from interrupt context. I don't > depend on it, but being able to perform runtime suspend directly from > the ISR would be convenient from a device driver POV. I'm not sure if > that should result in bus/device ->runtime_suspend() calls from > interrupt context though. > > In my case the bus specific code for ->runtime_suspend() may just > decrease the usage count of the powerdomain but refrain from calling > the device ->runtime_suspend() callbacks until all devices in the > powerdomain have been suspended. The bus/device runtime suspend > callbacks do not need to be executed from interrupt context. Just > noting that the device is idle is enough at interrupt time. This could > be handled by generic code IMO. >From practical experience doing USB power management I can tell you that requesting suspension from interrupt makes things a lot easier for driver writers. Regards Oliver _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
