drm/amdgpu/mst: Stop ignoring error codes and deadlocking

It appears that amdgpu makes the mistake of completely ignoring the return
values from the DP MST helpers, and instead just returns a simple
true/false. In this case, it seems to have come back to bite us because as
a result of simply returning false from
compute_mst_dsc_configs_for_state(), amdgpu had no way of telling when a
deadlock happened from these helpers. This could definitely result in some
kernel splats.

V2:
* Address Wayne's comments (fix another bunch of spots where we weren't
  passing down return codes)

Signed-off-by: Lyude Paul <[email protected]>
Fixes: 8c20a1ed9b4f ("drm/amd/display: MST DSC compute fair share")
Cc: Harry Wentland <[email protected]>
Cc: <[email protected]> # v5.6+
Reviewed-by: Wayne Lin <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions