drm/nouveau/kms: Fix memory leak in nv50_mstm_del()
commit 24199c5436f267399afed0c4f1f57663c0408f57 upstream. Noticed this while working on redoing the reference counting scheme in the DP MST helpers. Nouveau doesn't attempt to call drm_dp_mst_topology_mgr_destroy() at all, which leaves it leaking all of the resources for drm_dp_mst_topology_mgr and it's children mstbs+ports. Fixes: f479c0ba4a17 ("drm/nouveau/kms/nv50: initial support for DP 1.2 multi-stream") Signed-off-by: Lyude Paul <lyude@redhat.com> Cc: <stable@vger.kernel.org> # v4.10+ Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -3378,6 +3378,7 @@ nv50_mstm_del(struct nv50_mstm **pmstm)
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{
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struct nv50_mstm *mstm = *pmstm;
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if (mstm) {
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drm_dp_mst_topology_mgr_destroy(&mstm->mgr);
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kfree(*pmstm);
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*pmstm = NULL;
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}
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