Runtime PM defaults for USB hosts

[Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>]

Hi Alan and Rafael,

Is there a reason why runtime PM is disabled by default for PCI USB host
controllers?  It would really be nice to have this turned on by default
at boot, rather than running udev scripts or powertop.

Are there PCI USB hosts that can't handle D3?  Or something else
preventing us from turning runtime PM on by default?

Sarah Sharp
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