linux-kernel - [PATCH 5.10 03/71] HID: vivaldi: fix sysfs attributes leak

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Message-Id: <20220314112738.028318400@linuxfoundation.org>
Date:   Mon, 14 Mar 2022 12:52:56 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Stephen Boyd <swboyd@...omium.org>,
        Jiri Kosina <jkosina@...e.cz>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 03/71] HID: vivaldi: fix sysfs attributes leak

From: Dmitry Torokhov <dmitry.torokhov@...il.com>

[ Upstream commit cc71d37fd1f11e0495b1cf580909ebea37eaa886 ]

The driver creates the top row map sysfs attribute in input_configured()
method; unfortunately we do not have a callback that is executed when HID
interface is unbound, thus we are leaking these sysfs attributes, for
example when device is disconnected.

To fix it let's switch to managed version of adding sysfs attributes which
will ensure that they are destroyed when the driver is unbound.

Fixes: 14c9c014babe ("HID: add vivaldi HID driver")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Tested-by: Stephen Boyd <swboyd@...omium.org>
Reviewed-by: Stephen Boyd <swboyd@...omium.org>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/hid/hid-vivaldi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-vivaldi.c b/drivers/hid/hid-vivaldi.c
index 576518e704ee..d57ec1767037 100644
--- a/drivers/hid/hid-vivaldi.c
+++ b/drivers/hid/hid-vivaldi.c
@@ -143,7 +143,7 @@ static void vivaldi_feature_mapping(struct hid_device *hdev,
 static int vivaldi_input_configured(struct hid_device *hdev,
 				    struct hid_input *hidinput)
 {
-	return sysfs_create_group(&hdev->dev.kobj, &input_attribute_group);
+	return devm_device_add_group(&hdev->dev, &input_attribute_group);
 }
 
 static const struct hid_device_id vivaldi_table[] = {
-- 
2.34.1