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Subject[PATCH 4/8] drm/atomic: Avoid unused-but-set-variable warning on for_each_old_plane_in_state
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Artifically use 'plane' and 'old_plane_state' to avoid 'not used' warning.
The precedent has already been set by other macros in the same file.

Signed-off-by: Liu Ying <victor.liu@nxp.com>
---
include/drm/drm_atomic.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 54e051a..9da1e35a3 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -888,7 +888,9 @@ 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, \
- (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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