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Message-ID: <558fee93-282a-34b1-7225-3bcce63f6b1b@amd.com>
Date: Mon, 17 Apr 2023 17:17:19 -0400
From: Hamza Mahfooz <hamza.mahfooz@....com>
To: Arnd Bergmann <arnd@...nel.org>,
Harry Wentland <harry.wentland@....com>,
Leo Li <sunpeng.li@....com>,
Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
"Pan, Xinhui" <Xinhui.Pan@....com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>
Cc: Arnd Bergmann <arnd@...db.de>, Lyude Paul <lyude@...hat.com>,
Wayne Lin <Wayne.Lin@....com>, hersen wu <hersenxs.wu@....com>,
Fangzhi Zuo <Jerry.Zuo@....com>,
Aurabindo Pillai <Aurabindo.Pillai@....com>,
Alan Liu <HaoPing.Liu@....com>,
Wenjing Liu <wenjing.liu@....com>, Jun Lei <Jun.Lei@....com>,
Alex Hung <alex.hung@....com>, Aric Cyr <Aric.Cyr@....com>,
Qingqing Zhuo <qingqing.zhuo@....com>,
Alvin Lee <Alvin.Lee2@....com>, Roman Li <roman.li@....com>,
Jasdeep Dhillon <jdhillon@....com>,
Wesley Chalmers <Wesley.Chalmers@....com>,
amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] drm/amd/display: fix missing=prototypes warnings
On 4/17/23 17:05, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
>
> Three functions in the amdgpu display driver cause -Wmissing-prototype
> warnings:
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:1858:6: error: no previous prototype for 'is_timing_changed' [-Werror=missing-prototypes]
> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_mst_types.c:210:6: error: no previous prototype for 'is_synaptics_cascaded_panamera' [-Werror=missing-prototypes]
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30_optc.c:294:6: error: no previous prototype for 'optc3_wait_drr_doublebuffer_pending_clear' [-Werror=missing-prototypes]
>
> is_timing_changed() is actually meant to be a global symbol, but needs
> a proper name and prototype, while the other two can just be made static.
>
> Fixes: 54c7b715b5ef ("drm/amd/display: Add DSC Support for Synaptics Cascaded MST Hub")
> Fixes: 17ce8a6907f7 ("drm/amd/display: Add dsc pre-validation in atomic check")
> Fixes: 8f0d304d21b3 ("drm/amd/display: Do not commit pipe when updating DRR")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
It seems like, only the changes for is_timing_changed() are in this patch.
> ---
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 5 ++---
> drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 6 +++---
> drivers/gpu/drm/amd/display/dc/dc.h | 3 +++
> 3 files changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> index 994ba426ca66..442511061178 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> @@ -45,8 +45,7 @@
> #endif
>
> #include "dc/dcn20/dcn20_resource.h"
> -bool is_timing_changed(struct dc_stream_state *cur_stream,
> - struct dc_stream_state *new_stream);
> +
> #define PEAK_FACTOR_X1000 1006
>
> static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux,
> @@ -1417,7 +1416,7 @@ int pre_validate_dsc(struct drm_atomic_state *state,
> struct dc_stream_state *stream = dm_state->context->streams[i];
>
> if (local_dc_state->streams[i] &&
> - is_timing_changed(stream, local_dc_state->streams[i])) {
> + dc_is_timing_changed(stream, local_dc_state->streams[i])) {
> DRM_INFO_ONCE("crtc[%d] needs mode_changed\n", i);
> } else {
> int ind = find_crtc_index_in_state_by_stream(state, stream);
> 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 85d54bfb595c..344533623cb9 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
> @@ -1855,7 +1855,7 @@ bool dc_add_all_planes_for_stream(
> return add_all_planes_for_stream(dc, stream, &set, 1, context);
> }
>
> -bool is_timing_changed(struct dc_stream_state *cur_stream,
> +bool dc_is_timing_changed(struct dc_stream_state *cur_stream,
> struct dc_stream_state *new_stream)
> {
> if (cur_stream == NULL)
> @@ -1880,7 +1880,7 @@ static bool are_stream_backends_same(
> if (stream_a == NULL || stream_b == NULL)
> return false;
>
> - if (is_timing_changed(stream_a, stream_b))
> + if (dc_is_timing_changed(stream_a, stream_b))
> return false;
>
> if (stream_a->signal != stream_b->signal)
> @@ -3505,7 +3505,7 @@ bool pipe_need_reprogram(
> if (pipe_ctx_old->stream_res.stream_enc != pipe_ctx->stream_res.stream_enc)
> return true;
>
> - if (is_timing_changed(pipe_ctx_old->stream, pipe_ctx->stream))
> + if (dc_is_timing_changed(pipe_ctx_old->stream, pipe_ctx->stream))
> return true;
>
> if (pipe_ctx_old->stream->dpms_off != pipe_ctx->stream->dpms_off)
> diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
> index 23ee63b98dcd..e7ab6cb3769b 100644
> --- a/drivers/gpu/drm/amd/display/dc/dc.h
> +++ b/drivers/gpu/drm/amd/display/dc/dc.h
> @@ -2225,4 +2225,7 @@ void dc_process_dmub_dpia_hpd_int_enable(const struct dc *dc,
> /* Disable acc mode Interfaces */
> void dc_disable_accelerated_mode(struct dc *dc);
>
> +bool dc_is_timing_changed(struct dc_stream_state *cur_stream,
> + struct dc_stream_state *new_stream);
> +
> #endif /* DC_INTERFACE_H_ */
--
Hamza
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