Re: [PATCH] [v2] drm/amd/display: fix is_timing_changed() prototype

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On 4/17/23 18:07, Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@xxxxxxxx>

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]

is_timing_changed() is actually meant to be a global symbol, but needs
a proper name and prototype.

Fixes: 17ce8a6907f7 ("drm/amd/display: Add dsc pre-validation in atomic check")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Applied, thanks!

---
  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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