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

From: Stephen Rothwell <[email-masked]>
Date: Wed, 4 Sep 2019 16:46:22 +1000

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.

-- 
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