Re: [PATCH 8/8] spapr/drc: Clean up local variable shadowing in prop_get_fdt()

[Harsh Prateek Bora <harsh.prateek.bora@gmail.com>]

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On Tue, 19 Sept, 2023, 5:39 pm Cédric Le Goater, <clg@kaod.org> wrote:

> On 9/19/23 10:48, Harsh Prateek Bora wrote:
> >
> >
> > On 9/18/23 20:28, Cédric Le Goater wrote:
> >> Rename 'name' variable to avoid this warning :
> >>
> >>    ../hw/ppc/spapr_drc.c: In function ‘prop_get_fdt’:
> >>    ../hw/ppc/spapr_drc.c:344:21: warning: declaration of ‘name’ shadows
> a parameter [-Wshadow=compatible-local]
> >>      344 |         const char *name = NULL;
> >>          |                     ^~~~
> >>    ../hw/ppc/spapr_drc.c:325:63: note: shadowed declaration is here
> >>      325 | static void prop_get_fdt(Object *obj, Visitor *v, const char
> *name,
> >>          |
> ~~~~~~~~~~~~^~~~
> >>
> >> Signed-off-by: Cédric Le Goater <clg@kaod.org>
> >> ---
> >>   hw/ppc/spapr_drc.c | 10 +++++-----
> >>   1 file changed, 5 insertions(+), 5 deletions(-)
> >>
> >> diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
> >> index 843e318312d3..2b99d3b4b1a6 100644
> >> --- a/hw/ppc/spapr_drc.c
> >> +++ b/hw/ppc/spapr_drc.c
> >> @@ -341,7 +341,7 @@ static void prop_get_fdt(Object *obj, Visitor *v,
> const char *name,
> >>       fdt_depth = 0;
> >>       do {
> >> -        const char *name = NULL;
> >> +        const char *dt_name = NULL;
> >
> > I guess you wanted to use the input arg "name" here without
> re-declaration.
>
> I don't understand. I don't want to use the input arg "name" here.
> It seems useless in this case.
>

Yeh, I realize now. This patch can actually remove the unused arg "name" as
well?

C.
>
> > I do not see "name" being used elsewhere in this routine.
> >
> > regards,
> > Harsh
> >>           const struct fdt_property *prop = NULL;
> >>           int prop_len = 0, name_len = 0;
> >>           uint32_t tag;
> >> @@ -351,8 +351,8 @@ static void prop_get_fdt(Object *obj, Visitor *v,
> const char *name,
> >>           switch (tag) {
> >>           case FDT_BEGIN_NODE:
> >>               fdt_depth++;
> >> -            name = fdt_get_name(fdt, fdt_offset, &name_len);
> >> -            if (!visit_start_struct(v, name, NULL, 0, errp)) {
> >> +            dt_name = fdt_get_name(fdt, fdt_offset, &name_len);
> >> +            if (!visit_start_struct(v, dt_name, NULL, 0, errp)) {
> >>                   return;
> >>               }
> >>               break;
> >> @@ -369,8 +369,8 @@ static void prop_get_fdt(Object *obj, Visitor *v,
> const char *name,
> >>           case FDT_PROP: {
> >>               int i;
> >>               prop = fdt_get_property_by_offset(fdt, fdt_offset,
> &prop_len);
> >> -            name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
> >> -            if (!visit_start_list(v, name, NULL, 0, errp)) {
> >> +            dt_name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
> >> +            if (!visit_start_list(v, dt_name, NULL, 0, errp)) {
> >>                   return;
> >>               }
> >>               for (i = 0; i < prop_len; i++) {
>
>
>

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