Commit c7857ee6 authored by Mika Westerberg's avatar Mika Westerberg
Browse files

thunderbolt: Handle bandwidth allocation mode disable request 



Graphics can disable DisplayPort bandwidth allocation mode as well so if
this make sure to reset the tunnel state accordingly.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
parent d44b9827

drivers/thunderbolt/tb.c

+16 −6
Original line number Diff line number Diff line
@@ -2406,8 +2406,23 @@ static void tb_handle_dp_bandwidth_request(struct work_struct *work) 


	tb_port_dbg(in, "handling bandwidth allocation request\n");



	tunnel = tb_find_tunnel(tb, TB_TUNNEL_DP, in, NULL);

	if (!tunnel) {

		tb_port_warn(in, "failed to find tunnel\n");

		goto put_sw;

	}



	if (!usb4_dp_port_bandwidth_mode_enabled(in)) {

		if (tunnel->bw_mode) {

			/*

			 * Reset the tunnel back to use the legacy

			 * allocation.

			 */

			tunnel->bw_mode = false;

			tb_port_dbg(in, "DPTX disabled bandwidth allocation mode\n");

		} else {

			tb_port_warn(in, "bandwidth allocation mode not enabled\n");

		}

		goto put_sw;

	}
@@ -2432,11 +2447,6 @@ static void tb_handle_dp_bandwidth_request(struct work_struct *work) 


	tb_port_dbg(in, "requested bandwidth %d Mb/s\n", requested_bw);



	tunnel = tb_find_tunnel(tb, TB_TUNNEL_DP, in, NULL);

	if (!tunnel) {

		tb_port_warn(in, "failed to find tunnel\n");

		goto put_sw;

	}



	out = tunnel->dst_port;