linux-kernel - Re: [linux-pm] WARNING: at kernel/power/main.c:176 suspend_test

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Date:	Fri, 10 Oct 2008 15:55:38 -0400
From:	"Parag Warudkar" <parag.lkml@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	"Alan Stern" <stern@...land.harvard.edu>,
	"pm list" <linux-pm@...ts.linux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [linux-pm] WARNING: at kernel/power/main.c:176 suspend_test_finish+0x70/0x80()

On Fri, Oct 10, 2008 at 3:34 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:

>> It isn't in mainline; it's in linux-next.  Sorry, I wasn't sure which
>> kernel you were using.
>
> I understood it was the mainline from the report.
>
> Parag, could you please try to suspend without the USB drivers and see if the
> delay is still there?
>
Hi Rafael,

I did and it still does it of course with different stack trace -

[ 3929.502328] Pid: 8069, comm: pm-suspend Not tainted 2.6.27 #3
[ 3929.502329] Call Trace:
[ 3929.502334]  [<ffffffff8024721f>] warn_on_slowpath+0x5f/0x90
[ 3929.502337]  [<ffffffff804beb2e>] ? printk+0x67/0x69
[ 3929.502340]  [<ffffffff80377437>] ? kobject_put+0x27/0x60
[ 3929.502343]  [<ffffffff803f9905>] ? put_device+0x15/0x20
[ 3929.502345]  [<ffffffff80401afa>] ? device_resume+0x39a/0x460
[ 3929.502347]  [<ffffffff80274300>] suspend_test_finish+0x70/0x80
[ 3929.502349]  [<ffffffff802743f4>] suspend_devices_and_enter+0xe4/0x200
[ 3929.502351]  [<ffffffff80274686>] enter_state+0x146/0x1d0
[ 3929.502353]  [<ffffffff802747ca>] state_store+0xba/0x100
[ 3929.502354]  [<ffffffff803772f7>] kobj_attr_store+0x17/0x20
[ 3929.502357]  [<ffffffff803265a5>] sysfs_write_file+0xc5/0x140
[ 3929.502360]  [<ffffffff802cd18b>] vfs_write+0xcb/0x190
[ 3929.502362]  [<ffffffff802cd340>] sys_write+0x50/0x90
[ 3929.502365]  [<ffffffff8021163a>] system_call_fastpath+0x16/0x1b
[ 3929.502366] ---[ end trace 16538c71b37f9061 ]---
[ 3929.502557] PM: Finishing wakeup.
[ 3929.502558] Restarting tasks ... done.

Thanks
Parag
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