linux-kernel - [PATCH AUTOSEL 4.9 46/57] HID: hid-ntrig: add error handling for sysfs_create

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Date:   Mon, 17 Sep 2018 03:04:11 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Zhouyang Jia <jiazhouyang09@...il.com>,
        Jiri Kosina <jkosina@...e.cz>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL 4.9 46/57] HID: hid-ntrig: add error handling for
 sysfs_create_group

From: Zhouyang Jia <jiazhouyang09@...il.com>

[ Upstream commit 44d4d51de9a3534a2b63d69efda02a10e66541e4 ]

When sysfs_create_group fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling sysfs_create_group.

Signed-off-by: Zhouyang Jia <jiazhouyang09@...il.com>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/hid/hid-ntrig.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/hid/hid-ntrig.c b/drivers/hid/hid-ntrig.c
index 1b0084d4af2e..28373dab60ae 100644
--- a/drivers/hid/hid-ntrig.c
+++ b/drivers/hid/hid-ntrig.c
@@ -955,6 +955,8 @@ static int ntrig_probe(struct hid_device *hdev, const struct hid_device_id *id)
 
 	ret = sysfs_create_group(&hdev->dev.kobj,
 			&ntrig_attribute_group);
+	if (ret)
+		hid_err(hdev, "cannot create sysfs group\n");
 
 	return 0;
 err_free:
-- 
2.17.1