PCI/ASPM: Enable Latency Tolerance Reporting when supported

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Enable Latency Tolerance Reporting (LTR).  Note that LTR must be enabled in
the Root Port first, and must not be enabled in any downstream device
unless the Root Port and all intermediate Switches also support LTR.
See PCIe r3.1, sec 6.18.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Vidya Sagar <vidyas@nvidia.com>

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Bjorn Helgaas 2017-11-28 16:43:50 -06:00

parent 80d7d7a904

commit c46fd35807

2 changed files with 35 additions and 0 deletions

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33

drivers/pci/probe.c

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2

include/linux/pci.h

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