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

From: Ivan Lipski <[email protected]>

[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: 7f7d7ea1fa51 ("drm/amd/display: Add new sources for DCN6")

Reviewed-by: Dillon Varone <[email protected]>
Signed-off-by: Ivan Lipski <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/dml2_0/Makefile | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dml2_0/Makefile b/drivers/gpu/drm/amd/display/dc/dml2_0/Makefile
index 35d697872a9a..5388bf094fbc 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2_0/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dml2_0/Makefile
@@ -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)
 
-- 
2.43.0