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From:   Alex Deucher <alexdeucher@gmail.com>
Date:   Thu, 27 May 2021 00:12:46 -0400
Message-ID: <CADnq5_PmyZyZLO1N0q2fMM9NKPYYiMhbPBfgFyeOAWgi-i1MFg@mail.gmail.com>
Subject: Re: [PATCH 16/34] drm/amd/display/dc/dce/dce_transform: Remove
 superfluous re-initialisation of DCFE_MEM_LIGHT_SLEEP_CNTL,
To:     Lee Jones <lee.jones@linaro.org>
Cc:     Leo Li <sunpeng.li@amd.com>, Mauro Rossi <issor.oruam@gmail.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 Wed, May 26, 2021 at 4:48 AM Lee Jones <lee.jones@linaro.org> wrote:
>
> Fixes the following W=3D1 kernel build warning(s):
>
>  drivers/gpu/drm/amd/amdgpu/../display/modules/hdcp/hdcp_psp.c:374:22: wa=
rning: no previous prototype for =E2=80=98mod_hdcp_hdcp1_get_link_encryptio=
n_status=E2=80=99
>  In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce=
60_resource.c:28:
>  drivers/gpu/drm/amd/amdgpu/../include/asic_reg/dce/dce_6_0_d.h:568:43: w=
arning: initialized field overwritten [-Woverride-init]
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:157:14: =
note: in expansion of macro =E2=80=98mmCRTC0_DCFE_MEM_LIGHT_SLEEP_CNTL=E2=
=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_transform.h:170:2: note=
: in expansion of macro =E2=80=98SRI=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:183:3: n=
ote: in expansion of macro =E2=80=98XFM_COMMON_REG_LIST_DCE60=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:187:3: n=
ote: in expansion of macro =E2=80=98transform_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../include/asic_reg/dce/dce_6_0_d.h:568:43: n=
ote: (near initialization for =E2=80=98xfm_regs[0].DCFE_MEM_LIGHT_SLEEP_CNT=
L=E2=80=99)
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:157:14: =
note: in expansion of macro =E2=80=98mmCRTC0_DCFE_MEM_LIGHT_SLEEP_CNTL=E2=
=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_transform.h:170:2: note=
: in expansion of macro =E2=80=98SRI=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:183:3: n=
ote: in expansion of macro =E2=80=98XFM_COMMON_REG_LIST_DCE60=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:187:3: n=
ote: in expansion of macro =E2=80=98transform_regs=E2=80=99
>  drivers/gpu/drm/amd/amdgpu/../include/asic_reg/dce/dce_6_0_d.h:645:43: w=
arning: initialized field overwritten [-Woverride-init]
>
> 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: Mauro Rossi <issor.oruam@gmail.com>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
>  drivers/gpu/drm/amd/display/dc/dce/dce_transform.h | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_transform.h b/drivers=
/gpu/drm/amd/display/dc/dce/dce_transform.h
> index cbce194ec7b82..e98b5d4141739 100644
> --- a/drivers/gpu/drm/amd/display/dc/dce/dce_transform.h
> +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_transform.h
> @@ -166,8 +166,7 @@
>         SRI(SCL_F_SHARP_CONTROL, SCL, id)
>
>  #define XFM_COMMON_REG_LIST_DCE60(id) \
> -       XFM_COMMON_REG_LIST_DCE60_BASE(id), \
> -       SRI(DCFE_MEM_LIGHT_SLEEP_CNTL, CRTC, id)
> +       XFM_COMMON_REG_LIST_DCE60_BASE(id)

I believe this should be kept and it should be removed from
XFM_COMMON_REG_LIST_DCE60_BASE().

Alex

>  #endif
>
>  #define XFM_SF(reg_name, field_name, post_fix)\
> --
> 2.31.1
>