Re: [PATCH 42/42] include/drm/drm_atomic: Make use of 'new_crtc_state'

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On Tue, 17 Nov 2020, Daniel Vetter wrote:

> On Mon, Nov 16, 2020 at 05:41:12PM +0000, Lee Jones wrote:
> > In the macro for_each_oldnew_crtc_in_state() 'crtc_state' is provided
> > as a container for state->crtcs[i].new_state, but is not utilised in
> > some use-cases, so we fake-use it instead.
> > 
> > Fixes the following W=1 kernel build warning(s):
> > 
> >  drivers/gpu/drm/imx/ipuv3-plane.c: In function ‘ipu_planes_assign_pre’:
> >  drivers/gpu/drm/imx/ipuv3-plane.c:746:42: warning: variable ‘crtc_state’ set but not used [-Wunused-but-set-variable]
> > 
> > Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
> > Cc: David Airlie <airlied@xxxxxxxx>
> > Cc: Daniel Vetter <daniel@xxxxxxxx>
> > Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
> > Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
> > Cc: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx>
> > Cc: Fabio Estevam <festevam@xxxxxxxxx>
> > Cc: NXP Linux Team <linux-imx@xxxxxxx>
> > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> > Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
> 
> Ok I merged them all except:
> - drm/amd and drm/imx, should be picked up already by respective
>   maintainers
> - drm/msm, Rob promised to take care
> 
> Thanks a lot for your patches.

Perfect.  Thank you for reviewing/merging them.

> > ---
> >  include/drm/drm_atomic.h | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
> > index dc5e0fbecc04e..54e051a957dfc 100644
> > --- a/include/drm/drm_atomic.h
> > +++ b/include/drm/drm_atomic.h
> > @@ -783,7 +783,8 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> >  			      (void)(crtc) /* Only to avoid unused-but-set-variable warning */, \
> >  			     (old_crtc_state) = (__state)->crtcs[__i].old_state, \
> >  			     (void)(old_crtc_state) /* Only to avoid unused-but-set-variable warning */, \
> > -			     (new_crtc_state) = (__state)->crtcs[__i].new_state, 1))
> > +			     (new_crtc_state) = (__state)->crtcs[__i].new_state, \
> > +			     (void)(new_crtc_state) /* Only to avoid unused-but-set-variable warning */, 1))
> >  
> >  /**
> >   * for_each_old_crtc_in_state - iterate over all CRTCs in an atomic update
> 

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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