[PATCH] nvme: hwmon: fix crash on device teardown

[Enzo Matsumiya]

Thank you all for the feedback. I'll re-evaluate my patch and resubmit
it soon.

The problem clearly exists as I can easily reproduce it on my test
setup, but the strategy to fix it needs some rework apparently.

@Daniel maybe try tweaking your tests to use a smaller controller
loss timeout (-l option)? I do this on my tests because the default
value kicks in about 30min after hot-removal -- i.e. you
have to actually wait for the timeout to expire to trigger the bug.


Cheers,

Enzo