x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F

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commit 89e9f7bcd8 upstream.

Martin reported that the Supermicro X8DTH-i/6/iF/6F advertises incorrect
host bridge windows via _CRS:

  pci_root PNP0A08:00: host bridge window [io  0xf000-0xffff]
  pci_root PNP0A08:01: host bridge window [io  0xf000-0xffff]

Both bridges advertise the 0xf000-0xffff window, which cannot be correct.

Work around this by ignoring _CRS on this system.  The downside is that we
may not assign resources correctly to hot-added PCI devices (if they are
possible on this system).

Link: https://bugzilla.kernel.org/show_bug.cgi?id=42606
Reported-by: Martin Burnicki <martin.burnicki@meinberg.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Bjorn Helgaas 2016-12-28 14:55:16 -06:00 • committed by Ben Hutchings

parent 3389247229

commit 708c029b2e

1 changed files with 10 additions and 0 deletions

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arch/x86/pci/acpi.c

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