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-rw-r--r--drivers/thunderbolt/tb.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c
index 64dd22e1f5b2..5b0434c140f9 100644
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
@@ -2413,10 +2413,19 @@ static void tb_handle_dp_bandwidth_request(struct work_struct *work)
ret = usb4_dp_port_requested_bandwidth(in);
if (ret < 0) {
- if (ret == -ENODATA)
- tb_port_dbg(in, "no bandwidth request active\n");
- else
+ if (ret == -ENODATA) {
+ /*
+ * There is no request active so this means the
+ * BW allocation mode was enabled from graphics
+ * side. At this point we know that the graphics
+ * driver has read the DRPX capabilities so we
+ * can offer an better bandwidth estimatation.
+ */
+ tb_port_dbg(in, "DPTX enabled bandwidth allocation mode, updating estimated bandwidth\n");
+ tb_recalc_estimated_bandwidth(tb);
+ } else {
tb_port_warn(in, "failed to read requested bandwidth\n");
+ }
goto put_sw;
}
requested_bw = ret;