Re: linux-next: manual merge of the drm tree with the kbuild tree

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On Tue, Sep 3, 2019 at 11:46 PM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> Hi all,
>
> Today's linux-next merge of the drm tree got conflicts in:
>
>   drivers/gpu/drm/amd/display/dc/calcs/Makefile
>   drivers/gpu/drm/amd/display/dc/dml/Makefile
>   drivers/gpu/drm/amd/display/dc/dsc/Makefile
>
> between commit:
>
>   30851871d5ab ("kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)")
>
> from the kbuild tree and commit:
>
>   0f0727d971f6 ("drm/amd/display: readd -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines")
>
> from the drm tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.

My changes LGTM, thanks!

>
> --
> Cheers,
> Stephen Rothwell
>
> diff --cc drivers/gpu/drm/amd/display/dc/calcs/Makefile
> index d930df63772c,16614d73a5fc..000000000000
> --- a/drivers/gpu/drm/amd/display/dc/calcs/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
> @@@ -32,9 -32,13 +32,13 @@@ endi
>
>   calcs_ccflags := -mhard-float -msse $(cc_stack_align)
>
> + ifdef CONFIG_CC_IS_CLANG
> + calcs_ccflags += -msse2
> + endif
> +
>  -CFLAGS_dcn_calcs.o := $(calcs_ccflags)
>  -CFLAGS_dcn_calc_auto.o := $(calcs_ccflags)
>  -CFLAGS_dcn_calc_math.o := $(calcs_ccflags) -Wno-tautological-compare
>  +CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calcs.o := $(calcs_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calc_auto.o := $(calcs_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calc_math.o := $(calcs_ccflags) -Wno-tautological-compare
>
>   BW_CALCS = dce_calcs.o bw_fixed.o custom_float.o
>
> diff --cc drivers/gpu/drm/amd/display/dc/dml/Makefile
> index 83792e2c0f0e,95fd2beca80c..000000000000
> --- a/drivers/gpu/drm/amd/display/dc/dml/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile
> @@@ -32,16 -32,25 +32,20 @@@ endi
>
>   dml_ccflags := -mhard-float -msse $(cc_stack_align)
>
> + ifdef CONFIG_CC_IS_CLANG
> + dml_ccflags += -msse2
> + endif
> +
>  -CFLAGS_display_mode_lib.o := $(dml_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dml/display_mode_lib.o := $(dml_ccflags)
>
>   ifdef CONFIG_DRM_AMD_DC_DCN2_0
>  -CFLAGS_display_mode_vba.o := $(dml_ccflags)
>  -CFLAGS_display_mode_vba_20.o := $(dml_ccflags)
>  -CFLAGS_display_rq_dlg_calc_20.o := $(dml_ccflags)
>  -CFLAGS_display_mode_vba_20v2.o := $(dml_ccflags)
>  -CFLAGS_display_rq_dlg_calc_20v2.o := $(dml_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dml/display_mode_vba.o := $(dml_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_mode_vba_20.o := $(dml_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_rq_dlg_calc_20.o := $(dml_ccflags)
>   endif
>  -ifdef CONFIG_DRM_AMD_DCN3AG
>  -CFLAGS_display_mode_vba_3ag.o := $(dml_ccflags)
>  -endif
>  -CFLAGS_dml1_display_rq_dlg_calc.o := $(dml_ccflags)
>  -CFLAGS_display_rq_dlg_helpers.o := $(dml_ccflags)
>  -CFLAGS_dml_common_defs.o := $(dml_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dml/dml1_display_rq_dlg_calc.o := $(dml_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dml/display_rq_dlg_helpers.o := $(dml_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dml/dml_common_defs.o := $(dml_ccflags)
>
>   DML = display_mode_lib.o display_rq_dlg_helpers.o dml1_display_rq_dlg_calc.o \
>         dml_common_defs.o
> diff --cc drivers/gpu/drm/amd/display/dc/dsc/Makefile
> index c3922d6e7696,17db603f2d1f..000000000000
> --- a/drivers/gpu/drm/amd/display/dc/dsc/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/dsc/Makefile
> @@@ -9,9 -9,14 +9,13 @@@ endi
>
>   dsc_ccflags := -mhard-float -msse $(cc_stack_align)
>
> + ifdef CONFIG_CC_IS_CLANG
> + dsc_ccflags += -msse2
> + endif
> +
>  -CFLAGS_rc_calc.o := $(dsc_ccflags)
>  -CFLAGS_rc_calc_dpi.o := $(dsc_ccflags)
>  -CFLAGS_codec_main_amd.o := $(dsc_ccflags)
>  -CFLAGS_dc_dsc.o := $(dsc_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dsc/rc_calc.o := $(dsc_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dsc/rc_calc_dpi.o := $(dsc_ccflags)
>  +CFLAGS_$(AMDDALPATH)/dc/dsc/dc_dsc.o := $(dsc_ccflags)
>
>   DSC = dc_dsc.o rc_calc.o rc_calc_dpi.o
>


-- 
Thanks,
~Nick Desaulniers
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