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PCI/ASPM: Enable Latency Tolerance Reporting when supported
authorBjorn Helgaas <bhelgaas@google.com>
Tue, 28 Nov 2017 22:43:50 +0000 (16:43 -0600)
committerBjorn Helgaas <bhelgaas@google.com>
Tue, 19 Dec 2017 05:02:56 +0000 (23:02 -0600)
commitc46fd358070f22ba68d6e74c22016a33b914c20a
tree484d136f67cb8243a6790c1578a7497561b71311tree | snapshot
parent80d7d7a904fac3f8114448dbb8cc9fa253b10120commit | diff
PCI/ASPM: Enable Latency Tolerance Reporting when supported

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>
drivers/pci/probe.c diff | blob | history
include/linux/pci.h diff | blob | history
Domain: System / Kernel;