On Mon, Jul 07, 2014 at 05:23:39PM +0200, Julia Lawall wrote: > There is documentation about what kinds of devm functions exist, but it is > too bad that there is no documentation about where they can be used. > Often there are several levels of function pointers involved, so it can be > hard to figure out whether they can be used just by looking at the code. > I have only taken the strategy of using them in kinds of functions where > someone else has alreadyy figured out that they can be used.
It should be fairly clear given what they do I'd have thought - the devm_ functions tie the deallocation of a resource to the unbinding of a driver from a device so they can only be used to replace things that get cleaned up in a device model unbind path. There's not usually a great deal of indirection going on in those.
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