[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....@amd.com>
Cc: sta...@vger.kernel.org
---
drivers/gpu/drm/drm_dp_mst_topology.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 713ef3b42054..6d73559046e5 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1072,6 +1072,7 @@ 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,
@@ -2722,7 +2723,8 @@ 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;
--
2.17.1
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