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hwmon: (acpi_power_meter) fix lockdep spew due to non-static lock class 

Similar to a30dcb4f which fixed asus_atk0110.ko, I recently received a
bug report from someone hitting the same issue in acpi_power_meter.

[   13.963168] power_meter ACPI000D:00: Found ACPI power meter.
[   13.963900] BUG: key ffff8802161f3920 not in .data!
[   13.963904] ------------[ cut here ]------------
[   13.963915] WARNING: at kernel/lockdep.c:2986
	lockdep_init_map+0x52f/0x560()

So let's fix that up for them by statically declaring the
lockdep_class_key.

Signed-off-by: Kyle McMartin <kyle@redhat.com>
Cc: stable@vger.kernel.org # 3.0+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
This commit is contained in:
Kyle McMartin 2012-03-28 15:11:47 -04:00 committed by Guenter Roeck
parent ce15a81da3
commit 31e354ee65
1 changed files with 2 additions and 0 deletions
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2
drivers/hwmon/acpi_power_meter.c
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@ -632,6 +632,7 @@ static int register_ro_attrs(struct acpi_power_meter_resource *resource,
sensors->dev_attr.show = ro->show;
sensors->index = ro->index;
sysfs_attr_init(&sensors->dev_attr.attr);
res = device_create_file(dev, &sensors->dev_attr);
if (res) {
sensors->dev_attr.attr.name = NULL;
@ -661,6 +662,7 @@ static int register_rw_attrs(struct acpi_power_meter_resource *resource,
sensors->dev_attr.store = rw->set;
sensors->index = rw->index;
sysfs_attr_init(&sensors->dev_attr.attr);
res = device_create_file(dev, &sensors->dev_attr);
if (res) {
sensors->dev_attr.attr.name = NULL;