On Mon, Jan 16, 2012 at 11:42 AM, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: > > There are two sets of problems with that > > The first is that quite a few machines crap themselves if you do this > because nobody has ever tested things like the IRQ routing or the > firmware on suspend/resume when they find the hardwared controller has > gone for a walk. I think this could trivially be solved at least on these kinds of Apple machines by just making it a config option, and just not doing it if it doesn't work. Some kernel command line to say "ahci=force" or whatever. That doesn't solve the "user never even realized" problem, but at least it gives the user the possibility of solving the "crap firmware doesn't even allow this". > Putting it back on suspend might help in some cases but then you get to > pick your way through the documentation minefield, deal with device > changes while in non AHCI mode, figure out how to set up registers the > BIOS didn't etc. Yeah, no, that would just be horrible. I doubt it happens in practice, though. I bet the normal PCI/AHCI resume will just do the right thing. But I haven't tried.. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html