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drm/amd/display: Do not add '-mhard-float' to dml_ccflags for clang

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When clang's -Qunused-arguments is dropped from KBUILD_CPPFLAGS, it
warns:

  clang-16: error: argument unused during compilation: '-mhard-float' [-Werror,-Wunused-command-line-argument]

Similar to commit 84edc2eff8 ("selftest/fpu: avoid clang warning"),
just add this flag to GCC builds. Commit 0f0727d971 ("drm/amd/display:
readd -msse2 to prevent Clang from emitting libcalls to undefined SW FP
routines") added '-msse2' to prevent clang from emitting software
floating point routines.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Nathan Chancellor 2023-01-11 20:05:09 -07:00 committed by Masahiro Yamada
parent 66bfe497d0
commit 7db038d979
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/dml/Makefile
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@ -26,7 +26,8 @@
# subcomponents.
ifdef CONFIG_X86
dml_ccflags := -mhard-float -msse
dml_ccflags-$(CONFIG_CC_IS_GCC) := -mhard-float
dml_ccflags := $(dml_ccflags-y) -msse
endif
ifdef CONFIG_PPC64