Am Donnerstag, den 27.06.2019, 09:52 -0400 schrieb Alan Stern:

> 
> Or maybe the WAIT_FOR_RESUME ioctl returns because there was a remote 
> wakeup.  In this case also you would call FORBID_SUSPEND.
> 
> In fact, you should call FORBID_SUSPEND _whenever_ WAIT_FOR_RESUME

Well, this kind of indicates that the original syscall should bump
the counter.

> returns, unless your program has decided not to use the device any more
> (in which case you don't care whether the device is suspended or
> resumed).

Then you should close the device.

        Regards
                Oliver

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