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drm/dp_mst: Don't cache EDIDs for physical ports
author
Imre Deak
<imre.deak@intel.com>
Mon, 1 Feb 2021 12:01:43 +0000
(14:01 +0200)
committer
Imre Deak
<imre.deak@intel.com>
Thu, 4 Feb 2021 17:22:02 +0000
(19:22 +0200)
Caching EDIDs for physical ports prevents updating the EDID if a port
gets reconnected via a Connection Status Notification message, fix this.
Fixes:
db1a07956968
("drm/dp_mst: Handle SST-only branch device case")
Cc: Wayne Lin <Wayne.Lin@amd.com>
Cc: Lyude Paul <lyude@redhat.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20210201120145.350258-2-imre.deak@intel.com
drivers/gpu/drm/drm_dp_mst_topology.c
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diff --git
a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index
18b15a4
..
fd89a3a
100644
(file)
--- a/
drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/
drivers/gpu/drm/drm_dp_mst_topology.c
@@
-2302,7
+2302,8
@@
drm_dp_mst_port_add_connector(struct drm_dp_mst_branch *mstb,
}
if (port->pdt != DP_PEER_DEVICE_NONE &&
- drm_dp_mst_is_end_device(port->pdt, port->mcs)) {
+ drm_dp_mst_is_end_device(port->pdt, port->mcs) &&
+ port->port_num >= DP_MST_LOGICAL_PORT_0) {
port->cached_edid = drm_get_edid(port->connector,
&port->aux.ddc);
drm_connector_set_tile_property(port->connector);