Re: [PATCH -next] drm/komeda: remove set but not used variable 'old'

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On Thu, Jul 18, 2019 at 08:51:50PM +0200, Daniel Vetter wrote:
> On Tue, Jul 09, 2019 at 09:58:08PM +0800, YueHaibing wrote:
> > Fixes gcc '-Wunused-but-set-variable' warning:
> > 
> > drivers/gpu/drm/arm/display/komeda/komeda_plane.c:
> >  In function komeda_plane_atomic_duplicate_state:
> > drivers/gpu/drm/arm/display/komeda/komeda_plane.c:161:35:
> >  warning: variable old set but not used [-Wunused-but-set-variable
> > 
> > It is not used since commit 990dee3aa456 ("drm/komeda:
> > Computing image enhancer internally")
> > 
> > Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> > Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
> 
> Queued for 5.3, thanks for your patch.

Correction, this doesn't even compile. Please compile-test patches before
submitting.

Thanks, Daniel

> -Daniel
> 
> > ---
> >  drivers/gpu/drm/arm/display/komeda/komeda_plane.c | 4 ----
> >  1 file changed, 4 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> > index c095af1..c1381ac 100644
> > --- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> > @@ -158,8 +158,6 @@ static void komeda_plane_reset(struct drm_plane *plane)
> >  static struct drm_plane_state *
> >  komeda_plane_atomic_duplicate_state(struct drm_plane *plane)
> >  {
> > -	struct komeda_plane_state *new, *old;
> > -
> >  	if (WARN_ON(!plane->state))
> >  		return NULL;
> >  
> > @@ -169,8 +167,6 @@ komeda_plane_atomic_duplicate_state(struct drm_plane *plane)
> >  
> >  	__drm_atomic_helper_plane_duplicate_state(plane, &new->base);
> >  
> > -	old = to_kplane_st(plane->state);
> > -
> >  	return &new->base;
> >  }
> >  
> > -- 
> > 2.7.4
> > 
> > 
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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