On Thu, Oct 18, 2012 at 1:51 AM, Omar Ramirez Luna <omar.luna@xxxxxxxxxx> wrote: > On 15 October 2012 22:23, Felipe Contreras <felipe.contreras@xxxxxxxxx> wrote: >>> On probe this patch does pm_runtime_enable, however this doesn't mean >>> the device is turned ON or resumed or kept ON all the time. >> >> In fact it's the other way around; pm_runtime_enable turns off the >> power (if it's ON). > > pm_runtime_enable just decrements the disable_depth counter. Doesn't > turn off anything by itself. pm_runtime_enable turns on power management, without it the device remains in whatever state it booted. >> device_del >> device_pm_remove >> pm_runtime_remove >> __pm_runtime_disable <- HERE > > I'm not entirely convinced _iommu_ follows this path, it doesn't > create any devices nor register them... whereas mailbox does create > devices and mailbox does follow this path for the devices created > which are child devices. > > So this path won't take care of the omap-iommu device pm_runtime_disable. Are you sure? What code-path calls omap_iommu_remove then? Anyway, it was just an observation. I've seen other code do this. -- Felipe Contreras -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
