Re: [alsa-devel] [PATCH] ASoC: sgtl5000: Use devm_ functions

[Mark Brown]

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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