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Subject[PATCH 42/42] include/drm/drm_atomic: Make use of 'new_crtc_state'
Date
In the macro for_each_oldnew_crtc_in_state() 'crtc_state' is provided
as a container for state->crtcs[i].new_state, but is not utilised in
some use-cases, so we fake-use it instead.

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

drivers/gpu/drm/imx/ipuv3-plane.c: In function ‘ipu_planes_assign_pre’:
drivers/gpu/drm/imx/ipuv3-plane.c:746:42: warning: variable ‘crtc_state’ set but not used [-Wunused-but-set-variable]

Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
include/drm/drm_atomic.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index dc5e0fbecc04e..54e051a957dfc 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -783,7 +783,8 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
(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))
+ (new_crtc_state) = (__state)->crtcs[__i].new_state, \
+ (void)(new_crtc_state) /* Only to avoid unused-but-set-variable warning */, 1))

/**
* for_each_old_crtc_in_state - iterate over all CRTCs in an atomic update
--
2.25.1
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