Messages in this thread Patch in this message | | | From | Lee Jones <> | Subject | [PATCH 03/19] gpu: drm: imx: ipuv3-plane: Mark 'crtc_state' as __always_unused | Date | Thu, 5 Nov 2020 14:45:01 +0000 |
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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 this use-case. We cannot simply delete the variable, so here we tell the compiler that we're intentionally discarding the read value.
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> --- drivers/gpu/drm/imx/ipuv3-plane.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c index 8a4235d9d9f1e..acc0a3ce4992f 100644 --- a/drivers/gpu/drm/imx/ipuv3-plane.c +++ b/drivers/gpu/drm/imx/ipuv3-plane.c @@ -743,7 +743,7 @@ bool ipu_plane_atomic_update_pending(struct drm_plane *plane) int ipu_planes_assign_pre(struct drm_device *dev, struct drm_atomic_state *state) { - struct drm_crtc_state *old_crtc_state, *crtc_state; + struct drm_crtc_state *old_crtc_state, __always_unused *crtc_state; struct drm_plane_state *plane_state; struct ipu_plane_state *ipu_state; struct ipu_plane *ipu_plane; -- 2.25.1
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