Commit 2ec67a48 authored by Mika Westerberg's avatar Mika Westerberg
Browse files

thunderbolt: Log an error if DPTX request is not cleared 



This helps debugging issues around DisplayPort bandwidth allocation
mode.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
parent c7857ee6

drivers/thunderbolt/usb4.c

+3 −1
Original line number Diff line number Diff line
@@ -2858,8 +2858,10 @@ static int usb4_dp_port_wait_and_clear_cm_ack(struct tb_port *port, 
		usleep_range(50, 100);

	} while (ktime_before(ktime_get(), end));



	if (val & ADP_DP_CS_8_DR)

	if (val & ADP_DP_CS_8_DR) {

		tb_port_warn(port, "timeout waiting for DPTX request to clear\n");

		return -ETIMEDOUT;

	}



	ret = tb_port_read(port, &val, TB_CFG_PORT,

			   port->cap_adap + ADP_DP_CS_2, 1);