[cip-dev] [PATCH 4.19.y-cip 2/2] drm: atomic helper: fix W=1 warnings

Biju Das
2020-08-13T11:43:08Z

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From: Benjamin Gaignard <benjamin.gaignard@st.com>

commit bf5d837a0a4ced7cc223befc9e76d4ad30697d27 upstream.

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@st.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191008124254.2144-1-benjamin.gaignard@st.com
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
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 6329ed4af310..9042fdae9211 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -662,6 +662,7 @@ 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))

@@ -683,6 +684,7 @@ 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))

/**
@@ -703,7 +705,9 @@ 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
@@ -723,7 +727,9 @@ 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))

/**
@@ -762,7 +768,9 @@ 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
@@ -782,6 +790,7 @@ 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))

@@ -842,7 +851,9 @@ 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
--
2.17.1

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