bring back a local change to use DC_FP_START()/DC_FP_END() in

update_bw_bounding_box() lost in drm 5.15 update

should avoid 'SSE FP exception trap' infrequently seen on boot
with renoir and cezanne

problem reported by beck@ and claudio@

diff --git a/sys/dev/pci/drm/amd/display/dc/dcn21/dcn21_resource.c b/sys/dev/pci/drm/amd/display/dc/dcn21/dcn21_resource.c
index dfae434..c8707d8 100644 (file)
--- a/sys/dev/pci/drm/amd/display/dc/dcn21/dcn21_resource.c
+++ b/sys/dev/pci/drm/amd/display/dc/dcn21/dcn21_resource.c
@@ -1597,6 +1597,8 @@ static void update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_param
        unsigned int i, closest_clk_lvl = 0, k = 0;
        int j;
 
+       DC_FP_START();
+
        dcn2_1_ip.max_num_otg = pool->base.res_cap->num_timing_generator;
        dcn2_1_ip.max_num_dpp = pool->base.pipe_count;
        dcn2_1_soc.num_chans = bw_params->num_channels;
@@ -1647,6 +1649,8 @@ static void update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_param
                dcn2_1_soc.clock_limits[dcn2_1_soc.num_states].state = dcn2_1_soc.num_states;
        }
 
+       DC_FP_END();
+
        dml_init_instance(&dc->dml, &dcn2_1_soc, &dcn2_1_ip, DML_PROJECT_DCN21);
 }