On 7/27/2018 1:26 PM, Bjorn Helgaas wrote:
- A link can lead to a multi-function device, and the spec allows
those functions to have different ASPM settings (see PCIe r4.0,
sec 5.4.1). With the sysfs files at the upstream end of the link,
we have no way to configure those functions individually.
Even though we can set them individually, there is only one PCIe link
for single function as well as multi-function devices.
It would be a user mistake to allow individual PCIe functions with
different ASPM policies. (maybe, we should enforce it if we are not
doing it already).
