From: Johnson Chen <[email protected]>

Add guard for NULL pointer access

Reviewed-by: Charlene Liu <[email protected]>
Acked-by: Rodrigo Siqueira <[email protected]>
Signed-off-by: Johnson Chen <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c 
b/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c
index 6ba393e5b8ee..38fa7441df51 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_utils.c
@@ -158,6 +158,8 @@ bool is_dp2p0_output_encoder(const struct pipe_ctx 
*pipe_ctx)
        /* If this assert is hit then we have a link encoder dynamic management 
issue */
        ASSERT(pipe_ctx->stream_res.hpo_dp_stream_enc ? 
pipe_ctx->link_res.hpo_dp_link_enc != NULL : true);
 
+       if (pipe_ctx->stream == NULL)
+               return false;
        /* Count MST hubs once by treating only 1st remote sink in topology as 
an encoder */
        if (pipe_ctx->stream->link && pipe_ctx->stream->link->remote_sinks[0]) {
                        return (pipe_ctx->stream_res.hpo_dp_stream_enc &&
-- 
2.42.0

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