On Sunday 05 July 2009, HU TAO-TGHK48 wrote: > Below command would suspend all of devices and system > # echo mem > /sys/power/state > > How to just suspend/resume one specific devices? E.g. > /sys/devices/platform/serial8250 > > It would be useful to test the stability of PM interface of individual > driver. > If drivers called earlier refuse to suspend then not able to reach the > suspend/resume function of the specific driver. > > And it would be useful for automatic testing since a script can > suspend/resume the specific device for many times without manual > operation. > > Is it possible to add "state" for each device? > E.g. > # echo mem > /sys/devices/platform/serial8250/power/state No, and you can't suspend individual devices in general. There is such a mechanism for USB devices. The problem is that suspend while entering a system sleep state is generally a different operation from a suspend done at run time and the latter wouldn't be suitable for testing the former. If you need to test the suspend-resume of a driver, please use the /sys/power/pm_test interface (it works on the entire system, but it doesn't complete the suspend, so it's suitable for testing). Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
