Hi. On Tue, 2008-04-01 at 23:57 +0200, Rafael J. Wysocki wrote: > On Tuesday, 1 of April 2008, Nigel Cunningham wrote: > > Hi Rafael etc. > > > > On Tue, 2008-04-01 at 22:12 +0200, Rafael J. Wysocki wrote: > > > 'ext' means 'extended'. The idea is that the 'extended' version will be used > > > by bus types / driver types that don't need to implement the _noirq callbacks. > > > Both the platform and PCI bus types generally allow drivers to use _noirq > > > callbacks, so they use 'struct pm_ext_ops', as well as their corresponding > > > driver types. > > > > Do you mean to say in the first sentence "...that _do_ need to implement..."? > > Yes, sorry. Okay. Thanks! > > If not, then extended sounds like a misnomer and the two > > sentences seem to contradict one another. > > > > [...] > > > > > > > + * However, drivers may NOT assume anything about the availability of the > > > > > + * user space at that time and it is not correct to request firmware from > > > > > + * within @prepare() (it's too late to do that). > > > > > > > > That doesn't sound good. It would be good to be able to get drivers to > > > > request firmware early in the process. > > > > > > That will be possible when we drop the freezer. > > > > Yeah, but right now, it seems to me to be a bogus limitation for drivers > > to have no way of automatically loading firmware when you're about to > > hibernate. (Of course I've since been reminded of the notifier chain - > > that should probably be mentioned here as the way of achieving this). > > This is a tricky stuff, though, because the notifier is used for disabling the > user mode helpers too ... Hmm. Yet another notifier? > > By the way, I'm going to go on record now as saying I think dropping the > > freezer is a silly idea. I'm therefore currently considering including > > the freezer in TuxOnice from the time it gets dropped from mainline. I > > know that will only make it less likely that TuxOnIce gets merged, but > > I've given up caring about that anyway - caring about merging is > > pointless when the people who decide if it gets merged don't care. > > Well, I'm just not sure if dropping the freezer entirely will actually work, > but we won't know that if we don't try. > > There's been a lot of pressure on going into this direction recently and > in principle it seems to be doable at least for suspend. Hibernation is > another issue, but IMO it's better to focus on suspend first. For suspend, I agree with dropping its use. For hibernation... Nigel _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
