diff options
| author | Wayne Lin <Wayne.Lin@amd.com> | 2021-02-24 18:15:21 +0800 |
|---|---|---|
| committer | Lyude Paul <lyude@redhat.com> | 2021-02-24 13:10:17 -0500 |
| commit | d919d3d6cdb31d0f9fe06c880f683a24f2838813 (patch) | |
| tree | 6b2aac234f599d5eb5323ead238b7e4dac80ed74 /drivers/gpu | |
| parent | 419e91ea3143bf26991442465ac64d9461e98d96 (diff) | |
drm/dp_mst: Set CLEAR_PAYLOAD_ID_TABLE as broadcast
[Why & How]
According to DP spec, CLEAR_PAYLOAD_ID_TABLE is a path broadcast request
message and current implementation is incorrect. Fix it.
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210224101521.6713-3-Wayne.Lin@amd.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index 2995e9c5976a..f1068c5bcef8 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1154,6 +1154,7 @@ static void build_clear_payload_id_table(struct drm_dp_sideband_msg_tx *msg) req.req_type = DP_CLEAR_PAYLOAD_ID_TABLE; drm_dp_encode_sideband_req(&req, msg); + msg->path_msg = true; } static int build_enum_path_resources(struct drm_dp_sideband_msg_tx *msg, @@ -2822,7 +2823,8 @@ static int set_hdr_from_dst_qlock(struct drm_dp_sideband_msg_hdr *hdr, req_type = txmsg->msg[0] & 0x7f; if (req_type == DP_CONNECTION_STATUS_NOTIFY || - req_type == DP_RESOURCE_STATUS_NOTIFY) + req_type == DP_RESOURCE_STATUS_NOTIFY || + req_type == DP_CLEAR_PAYLOAD_ID_TABLE) hdr->broadcast = 1; else hdr->broadcast = 0; |