From 64a5fed6663edcf7e3864ed5534e42e2b9f340c7 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Thu, 6 Jan 2011 10:12:30 -0700 Subject: [PATCH] x86/PCI: make Broadcom CNB20LE driver EMBEDDED and EXPERIMENTAL This functionality is known to be incomplete, so discourage its use in general-purpose kernels. The only reason to use this driver is to support PCI hotplug on CNB20LE- based machines that don't have ACPI, and there are very few such systems. Reference: https://bugzilla.redhat.com/show_bug.cgi?id=665109 Signed-off-by: Bjorn Helgaas Signed-off-by: Jesse Barnes --- arch/x86/Kconfig | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index e330da21b84f..5c5666d4a040 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1907,13 +1907,19 @@ config PCI_MMCONFIG depends on X86_64 && PCI && ACPI config PCI_CNB20LE_QUIRK - bool "Read CNB20LE Host Bridge Windows" - depends on PCI + bool "Read CNB20LE Host Bridge Windows" if EMBEDDED + default n + depends on PCI && EXPERIMENTAL help Read the PCI windows out of the CNB20LE host bridge. This allows PCI hotplug to work on systems with the CNB20LE chipset which do not have ACPI. + There's no public spec for this chipset, and this functionality + is known to be incomplete. + + You should say N unless you know you need this. + config DMAR bool "Support for DMA Remapping Devices (EXPERIMENTAL)" depends on PCI_MSI && ACPI && EXPERIMENTAL -- 2.20.1