linux-kernel - [PATCH 5.16 0051/1017] greybus: svc: fix an error handling bug in gb_svc

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Date:   Tue,  5 Apr 2022 09:16:04 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Johan Hovold <johan@...nel.org>
Subject: [PATCH 5.16 0051/1017] greybus: svc: fix an error handling bug in gb_svc_hello()

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 5f8583a3b7552092582a92e7bbd2153319929ad7 upstream.

Cleanup if gb_svc_queue_deferred_request() fails.

Link: https://lore.kernel.org/r/20220202072016.GA6748@kili
Fixes: ee2f2074fdb2 ("greybus: svc: reconfig APBridgeA-Switch link to handle required load")
Cc: stable@...r.kernel.org      # 4.9
[johan: fix commit summary prefix and rename label ]
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Johan Hovold <johan@...nel.org>
Link: https://lore.kernel.org/r/20220202113347.1288-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/greybus/svc.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/greybus/svc.c
+++ b/drivers/greybus/svc.c
@@ -866,8 +866,14 @@ static int gb_svc_hello(struct gb_operat
 
 	gb_svc_debugfs_init(svc);
 
-	return gb_svc_queue_deferred_request(op);
+	ret = gb_svc_queue_deferred_request(op);
+	if (ret)
+		goto err_remove_debugfs;
 
+	return 0;
+
+err_remove_debugfs:
+	gb_svc_debugfs_exit(svc);
 err_unregister_device:
 	gb_svc_watchdog_destroy(svc);
 	device_del(&svc->dev);