On Mon, Jun 6, 2022 at 2:02 PM Harry Wentland <harry.wentland at amd.com> wrote:
>
>
>
> On 2022-06-06 12:17, Alex Deucher wrote:
> > On Mon, Jun 6, 2022 at 10:16 AM Harry Wentland <harry.wentland at amd.com> wrote:
> >>
> >> On 2022-06-03 14:50, Rodrigo Siqueira wrote:
> >>> This reverts commit 78baa3c4dfff4375b109bc5e19663a2f7fad1190.
> >>>
> >>> This commit introduced the below compilation error when using
> >>> allmodconfig:
> >>>
> >>> error: implicit declaration of function ‘remove_hpo_dp_link_enc_from_ctx’; did you mean ‘add_hpo_dp_link_enc_to_ctx’? [-Werror=implicit-function-declaration]
> >>> 2010 | remove_hpo_dp_link_enc_from_ctx(&new_ctx->res_ctx, del_pipe, del_pipe->stream);
> >>> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >>> | add_hpo_dp_link_enc_to_ctx
> >>>
> >>> Fixes: 78baa3c4dfff43 ("drm/amd/display: Drop unnecessary guard from DC resource")
> >>> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
> >>> ---
> >>> drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 2 ++
> >>> 1 file changed, 2 insertions(+)
> >>>
> >>> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
> >>> index 7357efb8b439..9bbdfcd6b3a4 100644
> >>> --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
> >>> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
> >>> @@ -2002,6 +2002,7 @@ enum dc_status dc_remove_stream_from_ctx(
> >>> if (dc->res_pool->funcs->link_enc_unassign)
> >>> dc->res_pool->funcs->link_enc_unassign(new_ctx, del_pipe->stream);
> >>>
> >>> +#if defined(CONFIG_DRM_AMD_DC_DCN)
> >>> if (is_dp_128b_132b_signal(del_pipe)) {
> >>> update_hpo_dp_stream_engine_usage(
> >>> &new_ctx->res_ctx, dc->res_pool,
> >>> @@ -2009,6 +2010,7 @@ enum dc_status dc_remove_stream_from_ctx(
> >>> false);
> >>> remove_hpo_dp_link_enc_from_ctx(&new_ctx->res_ctx, del_pipe, del_pipe->stream);
> >>
> >> Wouldn't a better solution be to drop the DCN guards around
> >> remove_hpo_dp_link_enc_from_ctx and release_hpo_dp_link_enc?
> >> Not sure why those were guarded in the first place.
> >
> > They were added by me in:
> >
> > commit d8e4fb9112e88d8d87ffbc38fa511e7118042d4f
> > Author: Alex Deucher <alexander.deucher at amd.com>
> > Date: Wed Jun 1 22:22:07 2022 -0400
> >
> > drm/amdgpu/display: Protect some functions with CONFIG_DRM_AMD_DC_DCN
> >
> > Protect remove_hpo_dp_link_enc_from_ctx() and release_hpo_dp_link_enc()
> > with CONFIG_DRM_AMD_DC_DCN as the functions are only called from code
> > that is protected by CONFIG_DRM_AMD_DC_DCN. Fixes build fail with
> > -Werror=unused-function.
> >
> > Fixes: 9b0e0d433f74 ("drm/amd/display: Add dependant changes for DCN32/321")
> > Reported-by: Stephen Rothwell <sfr at canb.auug.org.au>
> > Reviewed-by: Harry Wentland <harry.wentland at amd.com>
> > Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> > Cc: Aurabindo Pillai <aurabindo.pillai at amd.com>
> >
>
> I remember your patch was needed but don't see it now. I wonder
> if someone removed the reason the guards were needed.
It might have just been a temporary bandaid due to further patches
still waiting for CI to complete.
Alex
>
> Harry
>
> > Maybe they are no longer required?
> >
> > Alex
> >
> >
> >>
> >> Harry
> >>
> >>> }
> >>> +#endif
> >>>
> >>> if (del_pipe->stream_res.audio)
> >>> update_audio_usage(
> >>
>