On Wed, 12 Aug 2009, Rafael J. Wysocki wrote: > That looks quite complicated at first sight, but asynchronous resume with > completions can be done in a relatively simple patch. I've got one, so > tomorow I'll post it for further discussion. Okay. I would think that managing the threads would account for most of the complexity in either implementation, but I'll wait to see how your approach works out. > Thanks, > Rafael > > > PS > Did you have a chance to look at rev. 15 of the runtime PM patch > (http://patchwork.kernel.org/patch/40306/)? Yes, sorry for not getting back to you. It looks okay. The one thing I'm not sure of is the pm_runtime_put_noidle calls in driver_probe_device and __device_release_driver. It seems that we should always call pm_runtime_put regardless of whether the probe succeeds or not. For example, the USB stack is set up to suspend devices that don't have a driver (this is handled at the bus subsystem level). But if probing failed, there wouldn't be any idle callback and so the suspend wouldn't take place. Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
