Tony Breeds <t...@bakeyournoodle.com> wrote:
> On Wed, Jun 20, 2012 at 02:17:47PM +1000, Michael Neuling wrote:
> > chroma_defconfig currently gives me this with gcc 4.6:
> > arch/powerpc/mm/numa.c:638:13: error: 'dm' may be used uninitialized in
> > this function [-Werror=uninitialized]
> >
> > It's a bogus warning since of_get_drconf_memory() only writes it
> > anyway.
> >
> > Signed-off-by: Michael Neuling <mi...@neuling.org>
> > cc: sta...@kernel.org
> > ---
> > Also affects 3.4 and 3.3 stable.
> >
> > diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
> > index 5ca3a15..880acde 100644
> > --- a/arch/powerpc/mm/numa.c
> > +++ b/arch/powerpc/mm/numa.c
> > @@ -637,7 +637,7 @@ static inline int __init read_usm_ranges(const u32
> > **usm)
> > */
> > static void __init parse_drconf_memory(struct device_node *memory)
> > {
> > - const u32 *dm, *usm;
> > + const u32 *dm = NULL, *usm;
>
> Woot bikeshed! I think that's what the uninitialized_var() macro is for.
Doesn't work here. Produces the same error.
Mikey
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