linux-kernel - Re: [PATCH] coretemp: Initialize sysfs attrs

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Message-ID: <20110524140921.GA13039@ericsson.com>
Date:	Tue, 24 May 2011 07:09:22 -0700
From:	Guenter Roeck <guenter.roeck@...csson.com>
To:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
CC:	Jean Delvare <khali@...ux-fr.org>,
	"lm-sensors@...sensors.org" <lm-sensors@...sensors.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] coretemp: Initialize sysfs attrs

On Tue, May 24, 2011 at 07:28:31AM -0400, Sergey Senozhatsky wrote:
> Initialize sysfs attrs before device_create_file() call to suppress lockdep_init_map()
> warning:
> 
> [    3.653628] WARNING: at kernel/lockdep.c:2885 lockdep_init_map+0xea/0x43c()
> [    3.653698] Modules linked in:
> [    3.654835] Pid: 1, comm: swapper Not tainted 2.6.39-dbg-git8-05624-g46187f8 #576
> [    3.656014] Call Trace:
> [    3.657139]  [<ffffffff8103e4b4>] warn_slowpath_common+0x7e/0x96
> [    3.658298]  [<ffffffff8103e4e1>] warn_slowpath_null+0x15/0x17
> [    3.659460]  [<ffffffff8106d7b9>] lockdep_init_map+0xea/0x43c
> [    3.660616]  [<ffffffff81163c1a>] sysfs_add_file_mode+0x5d/0xa8
> [    3.661785]  [<ffffffff81163c71>] sysfs_add_file+0xc/0xe
> [    3.662929]  [<ffffffff81163d26>] sysfs_create_file+0x23/0x25
> [    3.664045]  [<ffffffff813724d1>] device_create_file+0x14/0x16
> [    3.665172]  [<ffffffff81460ed4>] coretemp_probe+0xf9/0x185
> [    3.666306]  [<ffffffff8137638e>] platform_drv_probe+0x12/0x14
> [    3.667420]  [<ffffffff81375321>] driver_probe_device+0xb0/0x14b
> [    3.668542]  [<ffffffff8137546d>] __device_attach+0x35/0x3a
> [    3.669710]  [<ffffffff81375438>] ? __driver_attach+0x7c/0x7c
> [    3.670816]  [<ffffffff8137426b>] bus_for_each_drv+0x54/0x88
> [    3.671921]  [<ffffffff81375231>] device_attach+0x77/0x9b
> [    3.673027]  [<ffffffff81374aef>] bus_probe_device+0x22/0x39
> [    3.674137]  [<ffffffff81373235>] device_add+0x3c1/0x550
> [    3.675249]  [<ffffffff81371ed9>] ? dev_set_name+0x3c/0x3e
> [    3.676371]  [<ffffffff813769f3>] platform_device_add+0x10c/0x156
> [    3.677491]  [<ffffffff8146af9c>] get_core_online+0xab/0x16e
> [    3.678608]  [<ffffffff81ad8070>] coretemp_init+0x4b/0x80
> [    3.679724]  [<ffffffff81ad8025>] ? hwmon_init+0xee/0xee
> [    3.680853]  [<ffffffff8100020a>] do_one_initcall+0x7a/0x13c
> [    3.681975]  [<ffffffff81aaac74>] kernel_init+0xe1/0x15b
> [    3.683081]  [<ffffffff8147e4e4>] kernel_thread_helper+0x4/0x10
> [    3.684174]  [<ffffffff8102d48c>] ? finish_task_switch+0x76/0xf0
> [    3.685266]  [<ffffffff81477918>] ? retint_restore_args+0x13/0x13
> [    3.686356]  [<ffffffff81aaab93>] ? start_kernel+0x3ee/0x3ee
> [    3.687425]  [<ffffffff8147e4e0>] ? gs_change+0x13/0x13
> [    3.688489] ---[ end trace 7392ad3e6a92ae39 ]---
> 
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> 
Thanks, applied.

Guenter
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