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

[Arnd Bergmann]

From: Arnd Bergmann <a...@arndb.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]

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 <a...@arndb.de>
---
 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_ */
-- 
2.39.2