[PATCH] drm/amd/display: Fix a regression on Polaris cards

[Mario Limonciello]

DCE products don't define a `remove_stream_from_ctx` like DCN ones
do. This means that when compute_mst_dsc_configs_for_state() is called
it always returns -EINVAL which causes MST to fail to setup.

Cc: stable at vger.kernel.org # 6.4.y
Cc: Harry Wentland <Harry.Wentland at amd.com>
Reported-by: Klaus.Kusche at computerix.info
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2671
Fixes: efa4c4df864e ("drm/amd/display: call remove_stream_from_ctx from res_pool funcs")
Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 943959012d04..57230661132b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -1327,7 +1327,7 @@ int compute_mst_dsc_configs_for_state(struct drm_atomic_state *state,
 		if (computed_streams[i])
 			continue;
 
-		if (!res_pool->funcs->remove_stream_from_ctx ||
+		if (res_pool->funcs->remove_stream_from_ctx &&
 		    res_pool->funcs->remove_stream_from_ctx(stream->ctx->dc, dc_state, stream) != DC_OK)
 			return -EINVAL;
 
-- 
2.34.1