[PATCH] drm/amd/display: fix non-x86/PPC64 compilation

[Alex Deucher]

Need to protect FP DMCUB code with CONFIG_DRM_AMD_DC_DCN.
Fixes build failures like the following on arm64:
ERROR: modpost: "__floatunsidf" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "__divdf3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "fma" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "__adddf3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "__fixdfsi" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "__muldf3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "__floatsidf" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "__fixunsdfsi" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!

Fixes: 85f4bc0c333c ("drm/amd/display: Add SubVP required code")
Reported-by: Nathan Chancellor <nathan at kernel.org>
Tested-by: Nathan Chancellor <nathan at kernel.org>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c  | 2 ++
 drivers/gpu/drm/amd/display/dc/dcn32/Makefile | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
index 6a25d64dd15c..6b446ae9e91f 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
@@ -370,6 +370,7 @@ void dc_dmub_srv_query_caps_cmd(struct dmub_srv *dmub)
 	}
 }
 
+#ifdef CONFIG_DRM_AMD_DC_DCN
 /**
  * ***********************************************************************************************
  * populate_subvp_cmd_drr_info: Helper to populate DRR pipe info for the DMCUB subvp command
@@ -698,6 +699,7 @@ void dc_dmub_setup_subvp_dmub_command(struct dc *dc,
 	dc_dmub_srv_cmd_execute(dc->ctx->dmub_srv);
 	dc_dmub_srv_wait_idle(dc->ctx->dmub_srv);
 }
+#endif
 
 bool dc_dmub_srv_get_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv, struct dmub_diagnostic_data *diag_data)
 {
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/Makefile b/drivers/gpu/drm/amd/display/dc/dcn32/Makefile
index fe29725b4c06..932d85fa4262 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/Makefile
@@ -27,7 +27,6 @@ ifdef CONFIG_CC_IS_GCC
 ifeq ($(call cc-ifversion, -lt, 0701, y), y)
 IS_OLD_GCC = 1
 endif
-dcn32_ccflags += -mhard-float
 endif
 
 ifdef CONFIG_X86
-- 
2.35.3