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drm/nouveau/kms: Fix memory leak in nv50_mstm_del()

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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: f479c0ba4a ("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>
This commit is contained in:
Lyude Paul 2018-12-11 18:56:20 -05:00 committed by Ben Skeggs
parent 970a5ee41c
commit 24199c5436
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/nouveau/dispnv50/disp.c
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@ -1264,6 +1264,7 @@ nv50_mstm_del(struct nv50_mstm **pmstm)
{
struct nv50_mstm *mstm = *pmstm;
if (mstm) {
drm_dp_mst_topology_mgr_destroy(&mstm->mgr);
kfree(*pmstm);
*pmstm = NULL;
}