2019-10-08 12:44:08

by Benjamin GAIGNARD

[permalink] [raw]
Subject: [PATCH v2] drm: atomic helper: fix W=1 warnings

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 <[email protected]>
---
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


2019-10-21 18:59:30

by Benjamin Gaignard

[permalink] [raw]
Subject: Re: [PATCH v2] drm: atomic helper: fix W=1 warnings

Le mer. 9 oct. 2019 à 09:13, Benjamin Gaignard
<[email protected]> a écrit :
>
> 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
>

Gentle ping,
Thanks,
Benjamin

> Signed-off-by: Benjamin Gaignard <[email protected]>
> ---
> 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
>
> _______________________________________________
> dri-devel mailing list
> [email protected]
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

2019-10-22 08:41:39

by Daniel Vetter

[permalink] [raw]
Subject: Re: [PATCH v2] drm: atomic helper: fix W=1 warnings

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 <[email protected]>

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 <[email protected]>
> ---
> 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

2019-11-07 10:13:23

by Benjamin Gaignard

[permalink] [raw]
Subject: Re: [PATCH v2] drm: atomic helper: fix W=1 warnings

Le mar. 22 oct. 2019 à 10:37, Daniel Vetter <[email protected]> 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 <[email protected]>
>
> 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 <[email protected]>

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
> [email protected]
> https://lists.freedesktop.org/mailman/listinfo/dri-devel