linux-kernel - [PATCH 4.9 44/94] HID: hid-ntrig: add error handling for sysfs_create

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Message-Id: <20181002132503.565647047@linuxfoundation.org>
Date:   Tue,  2 Oct 2018 06:24:58 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zhouyang Jia <jiazhouyang09@...il.com>,
        Jiri Kosina <jkosina@...e.cz>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 44/94] HID: hid-ntrig: add error handling for sysfs_create_group

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/hid/hid-ntrig.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/hid/hid-ntrig.c
+++ b/drivers/hid/hid-ntrig.c
@@ -955,6 +955,8 @@ static int ntrig_probe(struct hid_device
 
 	ret = sysfs_create_group(&hdev->dev.kobj,
 			&ntrig_attribute_group);
+	if (ret)
+		hid_err(hdev, "cannot create sysfs group\n");
 
 	return 0;
 err_free: