> Lots of drivers call mac_unregister(), and *then* disable callbacks, 
 > interrupts, etc.
 > 
 > This makes sense, because you don't want to tear all that stuff down if 
 > the mac is going to refuse to detach because its busy.

This is why Seb introduced mac_disable() a while back.  Once mac_disable()
succeeds, you can be certain mac_unregister() will not fail.

--
meem
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