[PATCH 2/2] of: base: of_new_property(): use xstrdup() instead of strdup()

[Sascha Hauer]

On Wed, Apr 19, 2017 at 01:20:26PM +0300, Antony Pavlov wrote:
> On Mon, 17 Apr 2017 13:42:10 +0300
> Antony Pavlov <antonynpavlov at gmail.com> wrote:
> 
> > At the moment of_new_property() uses xfunctions for memory
> > allocation so we can use xstrdup() instead of strdup()
> > for code simplification.
> > 
> > A side effect of this commmit is that
> > the of_new_property() function can't return NULL
> > anymore if CONFIG_OFTREE is set.
> 
> If of_new_property() can't return NULL we can skip all numerous
> checks after of_new_property() call. So the checks are actual only
> if CONFIG_OFTREE isn't set.
> 
> Have you any sugestions on removing of_new_property() return value checks?

I'm not sure removing these checks is a good idea. One possible error
return for of_new_property() could be -EEXIST. Right now we do not check
is the property already exists and just create a second property with
the same name. Also if you consider FIT images: These store a whole
kernel in a device tree property, so the xmalloc() we have for
allocating the data for the property might better be malloc() so that
it can fail.

Sascha

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