From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue, 17 Nov 2020 10:19:41 +0000 (+0300)
Subject: thunderbolt: Return -ENOTCONN when ERR_CONN is received
X-Git-Tag: accepted/tizen/unified/20230118.172025~8319^2~39^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=463e48fa544826898791085508459de246fc4c09;p=platform%2Fkernel%2Flinux-rpi.git

thunderbolt: Return -ENOTCONN when ERR_CONN is received

This allows the calling code to distinguish if the error was due to
ERR_CONN (adapter is disconneced or disabled) or something else. Will be
needed in USB4 router NVM update in the following patch.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---

diff --git a/drivers/thunderbolt/ctl.c b/drivers/thunderbolt/ctl.c
index 1d86e27..bac08b8 100644
--- a/drivers/thunderbolt/ctl.c
+++ b/drivers/thunderbolt/ctl.c
@@ -962,6 +962,9 @@ static int tb_cfg_get_error(struct tb_ctl *ctl, enum tb_cfg_space space,
 
 	if (res->tb_error == TB_CFG_ERROR_LOCK)
 		return -EACCES;
+	else if (res->tb_error == TB_CFG_ERROR_PORT_NOT_CONNECTED)
+		return -ENOTCONN;
+
 	return -EIO;
 }