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 (file)
--- 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;
 }