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

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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v2: drop the 1536 blacklist entry, superceded by the PNP/MMCONFIG changes from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>
This commit is contained in:
Dave Jones 2011-12-30 14:37:05 -05:00 committed by Jesse Barnes
parent f423fc627b
commit 28c3c05d33
1 changed files with 7 additions and 0 deletions
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7
arch/x86/pci/acpi.c
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@ -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."),
},
},
{}
};