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由 Bjorn Helgaas 提交于
When in the ASPM L1.0 state (but not the PCI-PM L1.0 state), the most recent LTR value and the LTR_L1.2_THRESHOLD determines whether the link enters the L1.2 substate. If we don't have LTR enabled, prevent the use of ASPM L1.2. PCI-PM L1.2 may still be used because it doesn't depend on LTR_L1.2_THRESHOLD (see PCIe r4.0, sec 5.5.1). Tested-by: NSrinath Mannam <srinath.mannam@broadcom.com> Signed-off-by: NBjorn Helgaas <bhelgaas@google.com> Reviewed-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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