linux-kernel - [PATCH 3.13.y-ckt 16/56] hwmon: (nct6775) Add missing sysfs attribute initialization

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Message-Id: <1436370037-25874-17-git-send-email-kamal@canonical.com>
Date:	Wed,  8 Jul 2015 08:39:57 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Guenter Roeck <linux@...ck-us.net>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 16/56] hwmon: (nct6775) Add missing sysfs attribute initialization

3.13.11-ckt23 -stable review patch.  If anyone has any objections, please let me know.

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

From: Guenter Roeck <linux@...ck-us.net>

commit 1b63bf617206ff35b93c57c67bbe067ac735a85a upstream.

The following error message is seen when loading the nct6775 driver
with DEBUG_LOCK_ALLOC enabled.

BUG: key ffff88040b2f0030 not in .data!
------------[ cut here ]------------
WARNING: CPU: 0 PID: 186 at kernel/locking/lockdep.c:2988
				lockdep_init_map+0x469/0x630()
DEBUG_LOCKS_WARN_ON(1)

Caused by a missing call to sysfs_attr_init() when initializing
sysfs attributes.

Reported-by: Alexey Orishko <alexey.orishko@...il.com>
Reviewed-by: Jean Delvare <jdelvare@...e.de>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/hwmon/nct6775.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index cf811c1..96ff69e 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -986,6 +986,7 @@ nct6775_create_attr_group(struct device *dev, struct sensor_template_group *tg,
 				 (*t)->dev_attr.attr.name, tg->base + i);
 			if ((*t)->s2) {
 				a2 = &su->u.a2;
+				sysfs_attr_init(&a2->dev_attr.attr);
 				a2->dev_attr.attr.name = su->name;
 				a2->nr = (*t)->u.s.nr + i;
 				a2->index = (*t)->u.s.index;
@@ -996,6 +997,7 @@ nct6775_create_attr_group(struct device *dev, struct sensor_template_group *tg,
 				*attrs = &a2->dev_attr.attr;
 			} else {
 				a = &su->u.a1;
+				sysfs_attr_init(&a->dev_attr.attr);
 				a->dev_attr.attr.name = su->name;
 				a->index = (*t)->u.index + i;
 				a->dev_attr.attr.mode =
-- 
1.9.1

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