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v2: drop the 1536 blacklist entry, superceded by the PNP/MMCONFIG changes from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>
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 404f21a..f5ccf29 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -24,6 +24,12 @@
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 @@
DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
},
},
+
{}
};