drm/amd/display: Add signal type check for dcn401 get_phyd32clk_src

Trying to access link enc on a dpia link will cause a crash otherwise

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
index 63cd13d4617a2caaa85f970f6d969dd8f2a407c6..b7593b886dc647977b9fef58fc86eb687886b2b9 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
@@ -914,10 +914,10 @@ static void dcn401_enable_stream_calc(
                        pipe_ctx->stream->link->cur_link_settings.lane_count;
        uint32_t active_total_with_borders;
 
-       if (dc->link_srv->dp_is_128b_132b_signal(pipe_ctx))
+       if (dc->link_srv->dp_is_128b_132b_signal(pipe_ctx)) {
                *dp_hpo_inst = pipe_ctx->stream_res.hpo_dp_stream_enc->inst;
-
-       *phyd32clk = get_phyd32clk_src(pipe_ctx->stream->link);
+               *phyd32clk = get_phyd32clk_src(pipe_ctx->stream->link);
+       }
 
        if (dc_is_tmds_signal(pipe_ctx->stream->signal))
                dcn401_calculate_dccg_tmds_div_value(pipe_ctx, tmds_div);