PCI: Only allow WC mmap on prefetchable resources

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The /proc/bus/pci mmap interface allows the user to specify whether they
want WC or not.  Don't let them do so on non-prefetchable BARs.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org

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David Woodhouse 2017-04-12 13:25:52 +01:00 • committed by Bjorn Helgaas

parent 17caf56731

commit cef4d02305

1 changed files with 8 additions and 5 deletions

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drivers/pci/proc.c

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