ioremap / iounmap balancing between init and cleanup functions

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I was peeking at some function balancing for ioremap / iounmap functions per one of the ongoing work items listed:

* ioremap() must be balanced by an iounmap() (this causes a memory leak).

A preliminary review leads to some strange things, including cases where there is an ioremap called in an _init function but no iounmap called (ever), including in the _cleanup function. An example of this can be found in :
linux/sound/oss/dmasound/dmasound_awacs.c as of the 2.6.22 source.

I *assume* that these should be taken care of, just wanted the 'list take' here before patching efforts take place in case of some nuance I'm not familiar with.

- [email protected]
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