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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-02-24 08:39:55 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-02-24 08:39:55 +0100
commitba08cf452f3493e96793c9fec4ebb45e7101a0c0 (patch)
tree61200038de5d9c6ba50dadfa7f065d029fa06174 /drivers/gpu/drm/drm_dp_mst_topology.c
parente24cd4e6d6aa3ca741cdfdfc01118c4016acebea (diff)
parentf8788d86ab28f61f7b46eb6be375f8a726783636 (diff)
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Merge 5.6-rc3 into tty-next
We want the tty fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/drm_dp_mst_topology.c')
-rw-r--r--drivers/gpu/drm/drm_dp_mst_topology.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 20cdaf3146b8..cce0b1bba591 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -3838,7 +3838,8 @@ drm_dp_mst_process_up_req(struct drm_dp_mst_topology_mgr *mgr,
else if (msg->req_type == DP_RESOURCE_STATUS_NOTIFY)
guid = msg->u.resource_stat.guid;
- mstb = drm_dp_get_mst_branch_device_by_guid(mgr, guid);
+ if (guid)
+ mstb = drm_dp_get_mst_branch_device_by_guid(mgr, guid);
} else {
mstb = drm_dp_get_mst_branch_device(mgr, hdr->lct, hdr->rad);
}