On Fri, 22 Nov 2013, Ulf Hansson wrote: > To put devices into low power state during sleep, it sometimes makes > sense at subsystem-level to re-use device's runtime PM callbacks. > > The PM core will at device_suspend_late disable runtime PM, after that > we can safely operate on these callbacks. At suspend_late the device > will be put into low power state by invoking the device's > runtime_suspend callback, unless the runtime status is already > suspended. At resume_early the state is restored by invoking the > device's runtime_resume callback. Soon after the PM core will re-enable > runtime PM before returning from device_resume_early. > > These are new pm_generic functions, which are supposed to be used in > pairs: > - pm_generic_suspend_late_runtime / pm_generic_resume_early_runtime > - pm_generic_freeze_late_runtime / pm_generic_thaw_early_runtime > - pm_generic_poweroff_late_runtime / pm_generic_restore_early_runtime The last four aren't needed. They do exactly the same things as the first two. If you insist on having those names available for drivers, just do: #define pm_generic_freeze_late_runtime pm_generic_suspend_late_runtime ... etc. Aside from that, this looks okay. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
