From: Utkarsh Patel <utkarsh.h.patel@intel.com>
Date: Fri, 23 Dec 2022 04:22:46 +0000 (-0800)
Subject: thunderbolt: Do not report errors if on-board retimers are found
X-Git-Tag: v6.1.8~96
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=16b4b0f8e5a054426dea04b4253d15602220dc1c;p=platform%2Fkernel%2Flinux-starfive.git

thunderbolt: Do not report errors if on-board retimers are found

commit c28f3d80383571d3630df1a0e89500d23e855924 upstream.

Currently we return an error even if on-board retimers are found and
that's not expected. Fix this to return an error only if there was one
and 0 otherwise.

Fixes: 1e56c88adecc ("thunderbolt: Runtime resume USB4 port when retimers are scanned")
Cc: stable@vger.kernel.org
Signed-off-by: Utkarsh Patel <utkarsh.h.patel@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/thunderbolt/retimer.c b/drivers/thunderbolt/retimer.c
index 81252e31014a..6ebe7a2886ec 100644
--- a/drivers/thunderbolt/retimer.c
+++ b/drivers/thunderbolt/retimer.c
@@ -471,10 +471,9 @@ int tb_retimer_scan(struct tb_port *port, bool add)
 			break;
 	}
 
-	if (!last_idx) {
-		ret = 0;
+	ret = 0;
+	if (!last_idx)
 		goto out;
-	}
 
 	/* Add on-board retimers if they do not exist already */
 	for (i = 1; i <= last_idx; i++) {