Re: [PATCH 2/2] hwmon: (nct6683) Add missing sysfs attibute initialization

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Hi Jean,

On 05/29/2015 01:50 AM, Jean Delvare wrote:
On Thu, 28 May 2015 09:15:56 -0700, Guenter Roeck wrote:
The following error message is seen when loading the nct6683 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@xxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
  drivers/hwmon/nct6683.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/hwmon/nct6683.c b/drivers/hwmon/nct6683.c
index f3830db02d46..37f01702d081 100644
--- a/drivers/hwmon/nct6683.c
+++ b/drivers/hwmon/nct6683.c
@@ -439,6 +439,7 @@ nct6683_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;
@@ -449,6 +450,7 @@ nct6683_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 =

Reviewed-by: Jean Delvare <jdelvare@xxxxxxx>

Thanks a lot for both reviews.

Looks like the abituguru and abituguru3 drivers suffer from the same
bug?

I'll have a look and submit more patches if needed.

Thanks,
Guenter


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