[U-Boot] [PATCH v3 09/12] libfdt: Add fdt_getprop_namelen_w

[Maxime Ripard]

Hi Simon,

On Sat, Jun 25, 2016 at 08:53:55PM -0600, Simon Glass wrote:
> Hi Maxime,
> 
> On 24 June 2016 at 08:27, Maxime Ripard
> <maxime.ripard at free-electrons.com> wrote:
> > Add a function to retrieve a writeable property only by the first
> > characters of its name.
> >
> > Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
> > ---
> >  include/libfdt.h | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/include/libfdt.h b/include/libfdt.h
> > index dbe8a0efca87..b8758de3ae54 100644
> > --- a/include/libfdt.h
> > +++ b/include/libfdt.h
> > @@ -619,6 +619,13 @@ const void *fdt_getprop_by_offset(const void *fdt, int offset,
> >   */
> >  const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
> >                                 const char *name, int namelen, int *lenp);
> > +static inline void *fdt_getprop_namelen_w(void *fdt, int nodeoffset,
> > +                                         const char *name, int namelen,
> > +                                         int *lenp)
> > +{
> > +       return (void *)(uintptr_t)fdt_getprop_namelen(fdt, nodeoffset, name,
> > +                                                     namelen, lenp);
> 
> What are the casts for?

This is modelled after the already existing fdt_getprop_w.

The casts just remove the const qualifier in fdt_getprop return value
so that you can modify it.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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