[PATCH 04/19] include: drm: drm_atomic: Make use of 'new_plane_state'
Ville Syrjälä
ville.syrjala at linux.intel.com
Fri Mar 19 13:52:43 UTC 2021
On Fri, Mar 19, 2021 at 08:24:13AM +0000, Lee Jones wrote:
> In the macro for_each_oldnew_plane_in_state() 'new_plane_state' is provided
> as a container for state->planes[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/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function ‘amdgpu_dm_commit_cursors’:
> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:7649:44: warning: variable ‘new_plane_state’ set but not used [-Wunused-but-set-variable]
>
> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Maxime Ripard <mripard at kernel.org>
> Cc: Thomas Zimmermann <tzimmermann at suse.de>
> Cc: David Airlie <airlied at linux.ie>
> Cc: Daniel Vetter <daniel at ffwll.ch>
> Cc: Rob Clark <robdclark at gmail.com>
> Cc: dri-devel at lists.freedesktop.org
> Signed-off-by: Lee Jones <lee.jones at 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 ac5a28eff2c86..259e6970dc836 100644
> --- a/include/drm/drm_atomic.h
> +++ b/include/drm/drm_atomic.h
> @@ -871,7 +871,8 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
> ((plane) = (__state)->planes[__i].ptr, \
> (void)(plane) /* Only to avoid unused-but-set-variable warning */, \
> (old_plane_state) = (__state)->planes[__i].old_state,\
> - (new_plane_state) = (__state)->planes[__i].new_state, 1))
> + (new_plane_state) = (__state)->planes[__i].new_state, \
> + (void)(new_plane_state) /* Only to avoid unused-but-set-variable warning */, 1))
In this case you can just switch the code to use
for_each_old_plane_in_state() instead.
>
> /**
> * for_each_oldnew_plane_in_state_reverse - iterate over all planes in an atomic
> --
> 2.27.0
>
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--
Ville Syrjälä
Intel
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