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Message-ID: <CA+M3ks7u7SOzYc-qgiefcG-Lvj6eP=VpJt2-h2JzGmd4K-ZqdQ@mail.gmail.com>
Date: Thu, 7 Nov 2019 11:10:44 +0100
From: Benjamin Gaignard <benjamin.gaignard@...aro.org>
To: Benjamin Gaignard <benjamin.gaignard@...com>,
David Airlie <airlied@...ux.ie>,
Ville Syrjälä <ville.syrjala@...ux.intel.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
ML dri-devel <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH v2] drm: atomic helper: fix W=1 warnings
Le mar. 22 oct. 2019 à 10:37, Daniel Vetter <daniel@...ll.ch> a écrit :
>
> On Tue, Oct 08, 2019 at 02:42:54PM +0200, Benjamin Gaignard wrote:
> > Few for_each macro set variables that are never used later which led
> > to generate unused-but-set-variable warnings.
> > Add (void)(foo) inside the macros to remove these warnings
> >
> > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
>
> OCD in me would lean towards annotating all of them, unconditionally, and
> be done. But I guess this works too. Either way:
>
> Reviewed-by: Daniel Vetter <daniel.vetter@...ll.ch>
Thanks,
Applied to drm-misc-next
Benjamin
> > ---
> > include/drm/drm_atomic.h | 17 ++++++++++++++---
> > 1 file changed, 14 insertions(+), 3 deletions(-)
> >
> > diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
> > index 927e1205d7aa..b6c73fd9f55a 100644
> > --- a/include/drm/drm_atomic.h
> > +++ b/include/drm/drm_atomic.h
> > @@ -693,6 +693,7 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> > (__i)++) \
> > for_each_if ((__state)->connectors[__i].ptr && \
> > ((connector) = (__state)->connectors[__i].ptr, \
> > + (void)(connector) /* Only to avoid unused-but-set-variable warning */, \
> > (old_connector_state) = (__state)->connectors[__i].old_state, \
> > (new_connector_state) = (__state)->connectors[__i].new_state, 1))
> >
> > @@ -714,6 +715,7 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> > (__i)++) \
> > for_each_if ((__state)->connectors[__i].ptr && \
> > ((connector) = (__state)->connectors[__i].ptr, \
> > + (void)(connector) /* Only to avoid unused-but-set-variable warning */, \
> > (old_connector_state) = (__state)->connectors[__i].old_state, 1))
> >
> > /**
> > @@ -734,7 +736,9 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> > (__i)++) \
> > for_each_if ((__state)->connectors[__i].ptr && \
> > ((connector) = (__state)->connectors[__i].ptr, \
> > - (new_connector_state) = (__state)->connectors[__i].new_state, 1))
> > + (void)(connector) /* Only to avoid unused-but-set-variable warning */, \
> > + (new_connector_state) = (__state)->connectors[__i].new_state, \
> > + (void)(new_connector_state) /* Only to avoid unused-but-set-variable warning */, 1))
> >
> > /**
> > * for_each_oldnew_crtc_in_state - iterate over all CRTCs in an atomic update
> > @@ -754,7 +758,9 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> > (__i)++) \
> > for_each_if ((__state)->crtcs[__i].ptr && \
> > ((crtc) = (__state)->crtcs[__i].ptr, \
> > + (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))
> >
> > /**
> > @@ -793,7 +799,9 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> > (__i)++) \
> > for_each_if ((__state)->crtcs[__i].ptr && \
> > ((crtc) = (__state)->crtcs[__i].ptr, \
> > - (new_crtc_state) = (__state)->crtcs[__i].new_state, 1))
> > + (void)(crtc) /* Only to avoid unused-but-set-variable warning */, \
> > + (new_crtc_state) = (__state)->crtcs[__i].new_state, \
> > + (void)(new_crtc_state) /* Only to avoid unused-but-set-variable warning */, 1))
> >
> > /**
> > * for_each_oldnew_plane_in_state - iterate over all planes in an atomic update
> > @@ -813,6 +821,7 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> > (__i)++) \
> > for_each_if ((__state)->planes[__i].ptr && \
> > ((plane) = (__state)->planes[__i].ptr, \
> > + (void)(plane) /* Only to avoid unused-but-set-variable warning */, \
> > (old_plane_state) = (__state)->planes[__i].old_state,\
> > (new_plane_state) = (__state)->planes[__i].new_state, 1))
> >
> > @@ -873,7 +882,9 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> > (__i)++) \
> > for_each_if ((__state)->planes[__i].ptr && \
> > ((plane) = (__state)->planes[__i].ptr, \
> > - (new_plane_state) = (__state)->planes[__i].new_state, 1))
> > + (void)(plane) /* Only to avoid unused-but-set-variable warning */, \
> > + (new_plane_state) = (__state)->planes[__i].new_state, \
> > + (void)(new_plane_state) /* Only to avoid unused-but-set-variable warning */, 1))
> >
> > /**
> > * for_each_oldnew_private_obj_in_state - iterate over all private objects in an atomic update
> > --
> > 2.15.0
> >
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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