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drm/amd/display: fix dcn21 Makefile for clang

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Just like all the other variants, this one passes invalid
compile-time options with clang after the new code got
merged:

clang: error: unknown argument: '-mpreferred-stack-boundary=4'
scripts/Makefile.build:265: recipe for target 'drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.o' failed

Use the same variant that we have for dcn20 to fix compilation.

Fixes: eced51f9ba ("drm/amd/display: Add hubp block for Renoir (v2)")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Arnd Bergmann 2019-10-02 14:01:25 +02:00 committed by Alex Deucher
parent 148d31e38f
commit c0e70e10b1
1 changed files with 11 additions and 1 deletions
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12
drivers/gpu/drm/amd/display/dc/dcn21/Makefile
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@ -3,7 +3,17 @@
DCN21 = dcn21_hubp.o dcn21_hubbub.o dcn21_resource.o
CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mhard-float -msse -mpreferred-stack-boundary=4
ifneq ($(call cc-option, -mpreferred-stack-boundary=4),)
cc_stack_align := -mpreferred-stack-boundary=4
else ifneq ($(call cc-option, -mstack-alignment=16),)
cc_stack_align := -mstack-alignment=16
endif
CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mhard-float -msse $(cc_stack_align)
ifdef CONFIG_CC_IS_CLANG
CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o += -msse2
endif
AMD_DAL_DCN21 = $(addprefix $(AMDDALPATH)/dc/dcn21/,$(DCN21))