id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
233	ACPI driver destroys PCI config space for PCI Express devices	yoda		"When ACPI.PSD is loaded (and it doesn't matter which switches is used) PCI config space gets destroyed for some devices - in my case my Wlan Intel 3945abg. This have been happening even in all 2.x versions too.

Since more and more users reports similar problems for other devices, I tried to compare, and it seems that this problem only happens for devices connected to PCI Express bus.

In my case it happens to 3945 device connected to PCI-e and the PCI-e root port.

Other users report the same problem happens to their Gigabit nics - when this
is connected to PCI-e too.

It seems, there is some general problem with ACPI driver about PCI-e devices, as I have not seen any case where a normal PCI device gets its PCI config space destroyed by ACPI driver.

Plenty of logs uploaded during time - but I'd be happy to supply more, if needed
(there are a few in Ticket #226, which shows some of them).

Reimplementing PCIWRITE is a nice tool for experts and hardcore users to test and workaround this problem; but we _really_ need to figure out, what goes wrong here, and fix that.

  Yoda."	defect	closed	blocker	Release 4.00	ACPI PSD	3.19.02	unknown	PCI config space PCI-e Express	e-co ecslist@…