[PATCH v6 4/6] drm/atomic: Avoid unused-but-set-variable warning on for_each_old_plane_in_state
From: Liu Ying <victor.liu@nxp.com>
Date: 2021-01-21 07:31:53
Also in:
dri-devel, linux-devicetree, lkml
Subsystem:
drm drivers, the rest · Maintainers:
David Airlie, Simona Vetter, Linus Torvalds
Artificially use 'plane' and 'old_plane_state' to avoid 'not used' warning. The precedent has already been set by other macros in the same file. Acked-by: Daniel Vetter <redacted> Signed-off-by: Liu Ying <victor.liu@nxp.com> --- v5->v6: * Fix commit message typo - s/Artifically/Artificially/ v4->v5: * No change. v3->v4: * Add Daniel's A-b tag. v2->v3: * Add a missing blank line. v1->v2: * No change. include/drm/drm_atomic.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index ce7023e..6ade7a1 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h@@ -908,7 +908,10 @@ 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, \ - (old_plane_state) = (__state)->planes[__i].old_state, 1)) + (void)(plane) /* Only to avoid unused-but-set-variable warning */, \ + (old_plane_state) = (__state)->planes[__i].old_state, \ + (void)(old_plane_state) /* Only to avoid unused-but-set-variable warning */, 1)) + /** * for_each_new_plane_in_state - iterate over all planes in an atomic update * @__state: &struct drm_atomic_state pointer
--
2.7.4
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