linux-kernel - [PATCH 5.4 015/348] usb: typec: Add the missed altmode_id_remove() in typec_register

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Message-Id: <20210712060702.206833493@linuxfoundation.org>
Date:   Mon, 12 Jul 2021 08:06:39 +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,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Jing Xiangfeng <jingxiangfeng@...wei.com>
Subject: [PATCH 5.4 015/348] usb: typec: Add the missed altmode_id_remove() in typec_register_altmode()

From: Jing Xiangfeng <jingxiangfeng@...wei.com>

commit 03026197bb657d784220b040c6173267a0375741 upstream.

typec_register_altmode() misses to call altmode_id_remove() in an error
path. Add the missed function call to fix it.

Fixes: 8a37d87d72f0 ("usb: typec: Bus type for alternate modes")
Cc: stable <stable@...r.kernel.org>
Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>
Link: https://lore.kernel.org/r/20210617073226.47599-1-jingxiangfeng@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/typec/class.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -487,8 +487,10 @@ typec_register_altmode(struct device *pa
 	int ret;
 
 	alt = kzalloc(sizeof(*alt), GFP_KERNEL);
-	if (!alt)
+	if (!alt) {
+		altmode_id_remove(parent, id);
 		return ERR_PTR(-ENOMEM);
+	}
 
 	alt->adev.svid = desc->svid;
 	alt->adev.mode = desc->mode;