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<snip>
Auto suspend can be a real problem when it is keyboards and mice. I
know there was a huge uproar with logitech unified receiver users when
powertop would change the receiver to autosuspend and the
keyboard/mouse became unresponsive for a couple of key presses. To be
honest, I think this particular change may do much more harm than
good.
At least it's implemented in such a way that it makes it straight forward
to test for, as opposed to hunting down files in multiple subdirectories
in sysfs.
If we get too many broken devices to list, then it's a one-liner to disable
it in the kernel build, and we still end up having a nice easy way for users
to test devices which we'd add to a whitelist in user-space.