linux-kernel - Re: [PATCH] acpi_power_meter: fix lockdep spew due to non-static lock class

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Date:	Wed, 28 Mar 2012 12:55:59 -0700
From:	Guenter Roeck <guenter.roeck@...csson.com>
To:	Kyle McMartin <kyle@...hat.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"khali@...ux-fr.org" <khali@...ux-fr.org>,
	"lm-sensors@...sensors.org" <lm-sensors@...sensors.org>,
	"djwong@...ibm.com" <djwong@...ibm.com>
Subject: Re: [PATCH] acpi_power_meter: fix lockdep spew due to non-static
 lock class

On Wed, 2012-03-28 at 15:11 -0400, Kyle McMartin wrote:
> 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@...hat.com>
> 
Applied.

Thanks,
Guenter


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