diff options
| author | Lyude Paul <lyude@redhat.com> | 2018-11-15 04:39:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-13 11:51:10 +0300 |
| commit | 85c8c61007dd62aa611522dae361370e114cdb88 (patch) | |
| tree | 1d23b3693f94c0d8e9602b1508faa322382c33ec | |
| parent | 4f44e58a561412c4225544220cdde8cf27defb34 (diff) | |
| download | linux-85c8c61007dd62aa611522dae361370e114cdb88.tar.xz | |
drm/nouveau/drm/nouveau: Check rc from drm_dp_mst_topology_mgr_resume()
commit b89fdf7ae8500feae1100d8b283176a44d31d698 upstream.
We need to actually make sure we check this on resume since otherwise we
won't know whether or not the topology is still there once we've
resumed, which will cause us to still think the topology is connected
even after it's been removed if the removal happens mid-suspend.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/nouveau/dispnv50/disp.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 2abcd7bf104f..f889d41a281f 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1224,8 +1224,16 @@ nv50_mstm_fini(struct nv50_mstm *mstm) static void nv50_mstm_init(struct nv50_mstm *mstm) { - if (mstm && mstm->mgr.mst_state) - drm_dp_mst_topology_mgr_resume(&mstm->mgr); + int ret; + + if (!mstm || !mstm->mgr.mst_state) + return; + + ret = drm_dp_mst_topology_mgr_resume(&mstm->mgr); + if (ret == -1) { + drm_dp_mst_topology_mgr_set_mst(&mstm->mgr, false); + drm_kms_helper_hotplug_event(mstm->mgr.dev); + } } static void |