[PATCH 02/30] include: drm: drm_atomic: Artificially use 'crtc' to avoid 'not used' warning

[Lee Jones]

The precedent has already been set by other macros in the same file.

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/vkms/vkms_drv.c:55:19: warning: variable ‘crtc’ set but not used [-Wunused-but-set-variable]
 55 | struct drm_crtc *crtc;
 | ^~~~

Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Maxime Ripard <mripard@xxxxxxxxxx>
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Rob Clark <robdclark@xxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
 include/drm/drm_atomic.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index 413fd0ca56a8f..dc5e0fbecc04e 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -802,6 +802,7 @@ 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, 1))
 
 /**
-- 
2.25.1