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References: <20210111191926.3688443-1-lee.jones@linaro.org> <20210111191926.3688443-13-lee.jones@linaro.org>
In-Reply-To: <20210111191926.3688443-13-lee.jones@linaro.org>
From:   Alex Deucher <alexdeucher@gmail.com>
Date:   Tue, 12 Jan 2021 17:13:04 -0500
Message-ID: <CADnq5_M27hzKp0tOqqNq-RHhRo_0KdjGt8V0dP7EdMKFidgvFA@mail.gmail.com>
Subject: Re: [PATCH 12/40] drm/amd/display/dc/dce120/Makefile: Ignore
 -Woverride-init warning
To:     Lee Jones <lee.jones@linaro.org>
Cc:     Leo Li <sunpeng.li@amd.com>, LKML <linux-kernel@vger.kernel.org>,
        amd-gfx list <amd-gfx@lists.freedesktop.org>,
        David Airlie <airlied@linux.ie>,
        Maling list - DRI developers 
        <dri-devel@lists.freedesktop.org>,
        Alex Deucher <alexander.deucher@amd.com>,
        =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>
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On Mon, Jan 11, 2021 at 2:20 PM Lee Jones <lee.jones@linaro.org> wrote:
>
> This file uses a complex abstracted set of hierarchical macros to
> setup its applicable register lists within constant structures.
> However in the case of TMDS_CNTL we wish to mark it as not applicable
> for this use-case.
>
> One method would be to de-const all of the definitions and users, then
> manually zero out TMDS_CNTL from the list.  Another would be to create
> a new set of hierarchical macros to omit TMDS_CNTL entirely.  Both
> would entail a great deal of unnecessary changes and maintenance
> burden.
>
> Instead, let's just silence the warning.
>
> Fixes the following W=3D1 kernel build warning(s):
>
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: warning: initialized field overwritten [-Woverride-init]
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:281:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: note: (near initialization for =E2=80=98stream_enc_regs[0].TMDS_CNTL=E2=
=80=99)
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:281:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: warning: initialized field overwritten [-Woverride-init]
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:282:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: note: (near initialization for =E2=80=98stream_enc_regs[1].TMDS_CNTL=E2=
=80=99)
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:282:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: warning: initialized field overwritten [-Woverride-init]
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:283:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: note: (near initialization for =E2=80=98stream_enc_regs[2].TMDS_CNTL=E2=
=80=99)
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:283:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: warning: initialized field overwritten [-Woverride-init]
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:284:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: note: (near initialization for =E2=80=98stream_enc_regs[3].TMDS_CNTL=E2=
=80=99)
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:284:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: warning: initialized field overwritten [-Woverride-init]
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:285:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: note: (near initialization for =E2=80=98stream_enc_regs[4].TMDS_CNTL=E2=
=80=99)
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:285:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: warning: initialized field overwritten [-Woverride-init]
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:286:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:277:15=
: note: (near initialization for =E2=80=98stream_enc_regs[5].TMDS_CNTL=E2=
=80=99)
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce120/dce120_resource.c:286:2:=
 note: in expansion of macro =E2=80=98stream_enc_regs=E2=80=99
>
> Cc: Harry Wentland <harry.wentland@amd.com>
> Cc: Leo Li <sunpeng.li@amd.com>
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian K=C3=B6nig" <christian.koenig@amd.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: Lee Jones <lee.jones@linaro.org>

Applied.  Thanks!

Alex


> ---
>  drivers/gpu/drm/amd/display/dc/dce120/Makefile | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dce120/Makefile b/drivers/gpu=
/drm/amd/display/dc/dce120/Makefile
> index 37db1f8d45ea5..a9cc4b73270bb 100644
> --- a/drivers/gpu/drm/amd/display/dc/dce120/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/dce120/Makefile
> @@ -24,6 +24,8 @@
>  # It provides the control and status of HW CRTC block.
>
>
> +CFLAGS_$(AMDDALPATH)/dc/dce120/dce120_resource.o =3D $(call cc-disable-w=
arning, override-init)
> +
>  DCE120 =3D dce120_resource.o dce120_timing_generator.o \
>  dce120_hw_sequencer.o
>
> --
> 2.25.1
>
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