Commit 0a2e1667 authored by Mika Westerberg's avatar Mika Westerberg
Browse files

thunderbolt: Ignore port locked error in tb_port_wait_for_link_width() 



Sometimes when polling for the port after target link width is changed
we get back port locked notification (because the link actually was
reset and then re-trained). Instead of bailing out we can ignore these
when polling for the width change as this is expected.

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
parent 0e14dd5e

drivers/thunderbolt/switch.c

+10 −3
Original line number Diff line number Diff line
@@ -1168,10 +1168,17 @@ int tb_port_wait_for_link_width(struct tb_port *port, int width, 


	do {

		ret = tb_port_get_link_width(port);

		if (ret < 0)

		if (ret < 0) {

			/*

			 * Sometimes we get port locked error when

			 * polling the lanes so we can ignore it and

			 * retry.

			 */

			if (ret != -EACCES)

				return ret;

		else if (ret == width)

		} else if (ret == width) {

			return 0;

		}



		usleep_range(1000, 2000);

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