On Wednesday, June 09, 2010, Alan Stern wrote: > Rafael: > > I see that the kacpi_notify_wq thread isn't freezable. This means we > are subject to a race during system sleep transitions. If a PCI device > is already runtime-suspended, then a PME# wakeup request could cause > kacpi_notify_wq to attempt a runtime resume at the same time as the > regular suspend or freeze method is running. (The same is true for > non-PCI devices and ACPI-platform-specific wakeup requests.) That, among other things, is why PCI devices are runtime resumed automatically by the PCI subsystem in its pm->prepare() callback. Thanks, Rafael -- 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
