On Thu, Oct 12, 2017 at 04:52:32PM -0500, Brijesh Singh wrote:
> See my above comment, I think the simplest solution is remove psp->sev_misc
Ok, so far so good.
But now you still need to track which is the last psp device and to call
misc_deregister() only when the last device exits. Because if you do
that for the first psp device as it is now, all the following devices
will see a deregistered misc device. And I don't think we want that.
You probably could do something with reference counting: Documentation/kref.txt
to track that and have the last device deregister the misc device.
Or have the "enclosing" sp-dev deregister the misc device when it is
exiting and when it is sure that there are no more psp devices...
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