On Tue, Nov 04, 2008 at 11:29:43AM +0900, Kenji Kaneshige wrote: > Matthew Garrett wrote: > >What do you mean by "not work properly"? The hardware we've tested with > >fires events even without an OSHP method being present. That's the case > >we're trying to deal with. > > > > Because the explanation of PCI Express Native Hot Plug control bit in > _OSC return value in PCI firmware spec says > > "... If firmware allows the operating system control of this feature, > then in the context of the _OSC method, it must ensure that all hot > plug events are routed to device interrupts as described in the PCI > Express Base Specification. ..." > > My understanding is that it is not ensured that all hot plug events > are routed to device interrupts, if hotplug control is not granted. My understanding is that in the worst case the hardware/firmware won't give us any events - that's basically equivalent to not having the driver loaded at all. On hardware that gives us the events anyway, we get some extra functionality. Thanks for the feedback! -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
