Commit 28c3c05d authored Dec 30, 2011 by Dave Jones Committed by Jesse Barnes Jan 06, 2012

PCI: add set_nouse_crs for use by a pci=nocrs blacklist

Some machines don't boot unless passed pci=nocrs.
(See https://bugzilla.redhat.com/show_bug.cgi?id=770308

 for details of
  one report. Waiting on dmidecode output for others).

Currently there is a DMI whitelist, even though the default is on.

v2: drop the 1536 blacklist entry, superceded by the PNP/MMCONFIG changes from
    Bjorn

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

parent f423fc62

arch/x86/pci/acpi.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,12 @@ static int __init set_use_crs(const struct dmi_system_id *id)
		return 0;
		}

		static int __init set_nouse_crs(const struct dmi_system_id *id)
		{
		pci_use_crs = false;
		return 0;
		}

		static const struct dmi_system_id pci_use_crs_table[] __initconst = {
		/* http://bugzilla.kernel.org/show_bug.cgi?id=14183 */
		{
		@@ -54,6 +60,7 @@ static const struct dmi_system_id pci_use_crs_table[] __initconst = {
		DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
		},
		},

		{}
		};