On Wed, Jan 21, 2009 at 05:03:20PM +0200, Andriy Gapon wrote: > > Do I need to code for MOD_UNLOAD for driver module that also creates a cdev? > I see in the current code that one strategy is to simply call > destroy_dev(). I guess detach routines are called automatically and > destroy_dev can be done there as well.. What are the detach routines ? Do you mean newbus device detach ?
Yes, the usual strategy is to call destroy_dev from unload handler. > > Is it reasonable to refuse unload if cdev is in use (in MOD_QUIESCE)? > How to check for that best? This cannot be checked race-free.
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