Re: [PATCH] iio: temperature: ltc2983: fix leak of device node iterator

[Jonathan Cameron]

On Sat, 26 Sep 2020 16:45:56 +0200
Markus Elfring <Markus.Elfring@xxxxxx> wrote:

> > Thought about adding an "goto err_of_node_put" instead, but as the error
> > paths are quite divergent, I'm not sure if that wouldn't complicate
> > things.  
> 
> Please add jump targets like “e_inval” and “put_node” so that a bit of
> common exception handling code can be better reused for this function implementation.
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/coding-style.rst?id=7c7ec3226f5f33f9c050d85ec20f18419c622ad6#n475

On this one I think readability would perhaps be hurt a little by
doing so, particular as we need to do the of_put_node in some but
not all non error paths.  

It is a close run thing between the two options however.

I considered another option of suggesting factoring out this whole
per node block, but to do that we would have to do something a bit
odd with the return value as we have 3 options.
* error
* do not parse any more children.
* continue to parse children.

So I think in this case Tobias' solution is the best one available.

Thanks,

Jonathan

> 
> Regards,
> Markus