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drm/amd/display: Relax frame size limit for dcn5/6 DML core funcs files

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[Why]
During compilation with  allmodconfig with KASAN, there appears a Werror:

  dml2_core_dcn5_funcs_mode_programming.c:11:13: error: stack frame size
  (2400) exceeds limit (2048) in 'dcn5_mode_programming'
  [-Werror,-Wframe-larger-than]

The dcn5/dcn6 dml2_core_*_funcs_mode_{programming,support} files were
split out of dml2_core_dcn4_calcs.o, which carries a relaxed
-Wframe-larger-than limit via $(frame_warn_flag) (2056 normally, or
4096 for clang + KASAN/KCSAN + COMPILE_TEST). The split-out files were
never added to the per-file CFLAGS override list, so they inherited the
strict global default of 2048. This is why these files trip the frame
size warning under KASAN while the larger dml2_core_dcn4_calcs.o does
not.

[How]
Apply the same $(frame_warn_flag) and CFLAGS_REMOVE handling used for
dml2_core_dcn4_calcs.o to the split-out files:
 - dml2_core_dcn5_funcs_mode_programming.o
 - dml2_core_dcn5_funcs_mode_support.o
 - dml2_core_dcn6_funcs_mode_programming.o
 - dml2_core_dcn6_funcs_mode_support.o

Fixes: 7f7d7ea1fa ("drm/amd/display: Add new sources for DCN6")
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Reported-by: Mark Brown <broonie@kernel.org>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ivan Lipski
2026-08-07 23:29:58 -04:00
committed by Alex Deucher
parent c56525193b
commit d03d1ac2b0
1 changed files with 8 additions and 0 deletions
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8
drivers/gpu/drm/amd/display/dc/dml2_0/Makefile
View File

@@ -75,11 +75,19 @@ $(foreach obj,$(DML2_RELATIVE_O_FILES),$(eval CFLAGS_REMOVE_$(AMDDALPATH)/$(obj)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/display_mode_core.o := $(dml2_ccflags) $(frame_warn_flag)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn4_calcs.o := $(dml2_ccflags) $(frame_warn_flag)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_utils.o := $(dml2_ccflags) $(frame_warn_flag)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn5_funcs_mode_programming.o := $(dml2_ccflags) $(frame_warn_flag)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn5_funcs_mode_support.o := $(dml2_ccflags) $(frame_warn_flag)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn6_funcs_mode_programming.o := $(dml2_ccflags) $(frame_warn_flag)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn6_funcs_mode_support.o := $(dml2_ccflags) $(frame_warn_flag)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml2_wrapper.o := $(dml2_rcflags)
CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/dml21_wrapper.o := $(dml2_rcflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/display_mode_core.o := $(dml2_rcflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn4_calcs.o := $(dml2_rcflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_utils.o := $(dml2_rcflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn5_funcs_mode_programming.o := $(dml2_rcflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn5_funcs_mode_support.o := $(dml2_rcflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn6_funcs_mode_programming.o := $(dml2_rcflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn6_funcs_mode_support.o := $(dml2_rcflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml2_wrapper.o := $(dml2_ccflags)
CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/dml21_wrapper.o := $(dml2_ccflags)