When ODM slice happens on DCN401, there is a null pointer exception
caused by that. This commit address this issue by checking if the
required data structures are initialized.

Reviewed-by: Rodrigo Siqueira <[email protected]>
Signed-off-by: Aurabindo Pillai <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c 
b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index ce1991e06049..beca40f8694f 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -2083,8 +2083,10 @@ int resource_get_odm_slice_dst_width(struct pipe_ctx 
*otg_master,
                        timing->h_border_left +
                        timing->h_border_right;
        int width = h_active / count;
-       bool two_pixel_alignment_required =
-                       
otg_master->stream_res.tg->funcs->is_two_pixels_per_container(timing);
+       bool two_pixel_alignment_required = false;
+
+       if (otg_master && otg_master->stream_res.tg && otg_master->stream)
+               two_pixel_alignment_required = 
otg_master->stream_res.tg->funcs->is_two_pixels_per_container(timing);
 
        if ((width % 2) && two_pixel_alignment_required)
                width++;
@@ -2124,7 +2126,7 @@ struct rect resource_get_odm_slice_src_rect(struct 
pipe_ctx *pipe_ctx)
        odm_slice_dst = resource_get_odm_slice_dst_rect(opp_head);
        odm_slice_src = odm_slice_dst;
 
-       if (opp->funcs->opp_get_left_edge_extra_pixel_count)
+       if (opp && opp->funcs->opp_get_left_edge_extra_pixel_count)
                left_edge_extra_pixel_count =
                                opp->funcs->opp_get_left_edge_extra_pixel_count(
                                                opp, 
pipe_ctx->stream->timing.pixel_encoding,
-- 
2.39.2

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