linux-kernel - Re: [patch] thermal: make lockdep happy

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Date:	Wed, 31 Mar 2010 22:17:32 +0200
From:	Christian Casteyde <casteyde.christian@...e.fr>
To:	Dan Carpenter <error27@...il.com>, Zhang Rui <rui.zhang@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Len Brown <len.brown@...el.com>,
	Matthew Garrett <mjg@...hat.com>,
	Frans Pop <elendil@...net.nl>, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [patch] thermal: make lockdep happy

Seems to fix it, at least when applied on -rc3.
I'm updating the bugzilla entry.

Thanks.

Le mercredi 31 mars 2010, Dan Carpenter a écrit :
> Hi Christian,
>
> Can you test this patch?
>
> I wrote this to address bugzilla bug:
> 	https://bugzilla.kernel.org/show_bug.cgi?id=15504
> 	BUG: key ffff88004c3811e0 not in .data! occured in lockdep.c
>
> We now have to call sysfs_attr_init() for dynamically allocated sysfs
> attributes or lockdep complains.
>
> Signed-off-by: Dan Carpenter <error27@...il.com>
>
> diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
> index 5066de5..d4fec47 100644
> --- a/drivers/thermal/thermal_sys.c
> +++ b/drivers/thermal/thermal_sys.c
> @@ -725,6 +725,7 @@ int thermal_zone_bind_cooling_device(struct
> thermal_zone_device *tz, goto release_idr;
>
>  	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
> +	sysfs_attr_init(&dev->attr.attr);
>  	dev->attr.attr.name = dev->attr_name;
>  	dev->attr.attr.mode = 0444;
>  	dev->attr.show = thermal_cooling_device_trip_point_show;


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