On Thu, Mar 12, 2020 at 09:38:02AM -0500, Bjorn Helgaas wrote:
> On Thu, Mar 12, 2020 at 10:04:12PM +0800, Chen Zhou wrote:
> > Fixes gcc '-Wunused-but-set-variable' warning:
> >
> > drivers/pci/hotplug/rpaphp_core.c: In function is_php_type:
> > drivers/pci/hotplug/rpaphp_core.c:291:16: warning:
> > variable value set but not used [-Wunused-but-set-variable]
> >
> > Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> > Signed-off-by: Chen Zhou <chenzhou10@xxxxxxxxxx>
>
> Michael, if you want this:
>
> Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
>
> If you don't mind, edit the subject to follow the convention, e.g.,
>
> PCI: rpaphp: Remove unused variable 'value'
>
> Apparently simple_strtoul() is deprecated and we're supposed to use
> kstrtoul() instead. Looks like kstrtoul() might simplify the code a
> little, too, e.g.,
>
> if (kstrtoul(drc_type, 0, &value) == 0)
> return 1;
>
> return 0;
I guess there are several other uses of simple_strtoul() in this file.
Not sure if it's worth changing them all, just this one, or just the
patch below as-is.
> > ---
> > drivers/pci/hotplug/rpaphp_core.c | 3 +--
> > 1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
> > index e408e40..5d871ef 100644
> > --- a/drivers/pci/hotplug/rpaphp_core.c
> > +++ b/drivers/pci/hotplug/rpaphp_core.c
> > @@ -288,11 +288,10 @@ EXPORT_SYMBOL_GPL(rpaphp_check_drc_props);
> >
> > static int is_php_type(char *drc_type)
> > {
> > - unsigned long value;
> > char *endptr;
> >
> > /* PCI Hotplug nodes have an integer for drc_type */
> > - value = simple_strtoul(drc_type, &endptr, 10);
> > + simple_strtoul(drc_type, &endptr, 10);
> > if (endptr == drc_type)
> > return 0;
> >
> > --
> > 2.7.4
> >
