From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Message-ID: <5123C5A5.4000106@suse.cz>
Date: Tue, 19 Feb 2013 19:34:13 +0100
From: Jiri Slaby <jslaby@suse.cz>
MIME-Version: 1.0
To: Konstantin Khlebnikov <khlebnikov@openvz.org>
CC: Bjorn Helgaas <bhelgaas@google.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>,
	linux-pci@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>
Subject: WARNING: at drivers/pci/pci.c:1397 pci_disable_device
Content-Type: text/plain; charset=ISO-8859-2
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-pci.vger.kernel.org>

Hi,

so I hit that one:
+       dev_WARN_ONCE(&dev->dev, atomic_read(&dev->enable_cnt) <= 0,
+                     "disabling already-disabled device");

during suspend (to ram):
WARNING: at drivers/pci/pci.c:1397 pci_disable_device+0x90/0xa0()
Hardware name: To Be Filled By O.E.M.
Device e1000e
disabling already-disabled device
Modules linked in: dvb_usb_dib0700 dib0090 dib7000p dib7000m dib0070
dib8000 dib3000mc dibx000_common microcode
Pid: 31027, comm: kworker/u:35 Not tainted 3.8.0-rc7-next-20130218_64+ #1768
Call Trace:
 [<ffffffff81313b00>] ? do_pci_disable_device+0x30/0x60
 [<ffffffff8107f2ff>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8107f3f6>] warn_slowpath_fmt+0x46/0x50
 [<ffffffff81313bc0>] pci_disable_device+0x90/0xa0
 [<ffffffff814c8152>] __e1000_shutdown+0x262/0x8b0
 [<ffffffff814c8813>] e1000_suspend+0x23/0x50
 [<ffffffff816be581>] ? wait_for_completion+0x31/0x100
 [<ffffffff81316337>] pci_pm_suspend+0x77/0x140
 [<ffffffff8144aa6a>] ? __pm_runtime_barrier+0x1a/0x130
 [<ffffffff813162c0>] ? pci_pm_poweroff+0xf0/0xf0
 [<ffffffff81447838>] dpm_run_callback+0x58/0x90
 [<ffffffff8144795b>] __device_suspend+0xeb/0x280
 [<ffffffff814482af>] async_suspend+0x1f/0xa0
 [<ffffffff810a9c9b>] async_run_entry_fn+0x3b/0x140
 [<ffffffff8109b9a4>] process_one_work+0x174/0x410
 [<ffffffff8109d426>] worker_thread+0x116/0x400
 [<ffffffff8109d310>] ? busy_worker_rebind_fn+0xc0/0xc0
 [<ffffffff810a3340>] kthread+0xc0/0xd0
 [<ffffffff810a3280>] ? kthread_create_on_node+0x130/0x130
 [<ffffffff816c089c>] ret_from_fork+0x7c/0xb0
 [<ffffffff810a3280>] ? kthread_create_on_node+0x130/0x130
---[ end trace 6c5060f8b8fb9175 ]---
e1000e 0000:00:19.0: System wakeup enabled by ACPI


-- 
js
suse labs