Re: [PATCH 2/2] asus-laptop: remove unused variable

From: Giedrius StatkeviÄius
Date: Sun Apr 10 2016 - 04:49:00 EST


On Sat, Apr 09, 2016 at 08:21:21PM -0700, Darren Hart wrote:
> On Thu, Apr 07, 2016 at 11:20:01PM +0300, Giedrius StatkeviÄius wrote:
> > `out' was assigned value but it was never used so remove it
> >
> > Signed-off-by: Giedrius StatkeviÄius <giedrius.statkevicius@xxxxxxxxx>
> > ---
> > drivers/platform/x86/asus-laptop.c | 3 ---
> > 1 file changed, 3 deletions(-)
> >
> > diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
> > index d86d42e..39ddcee 100644
> > --- a/drivers/platform/x86/asus-laptop.c
> > +++ b/drivers/platform/x86/asus-laptop.c
> > @@ -946,11 +946,8 @@ static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
> > const char *method)
> > {
> > int rv, value;
> > - int out = 0;
> >
> > rv = parse_arg(buf, count, &value);
> > - if (rv > 0)
> > - out = value ? 1 : 0;
> >
> > if (write_acpi_int(asus->handle, method, value))
>
> out is indeed unused, however the rv > 0 condition is relevant as <=0 will pass
> value uninitialized to write_acpi_int.
That's indeed a problem. Somehow I missed that :( Should I make a v2 to include
another patch that checks for rv < 0 or send it as an independent one?