------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.31/kernel/power/suspend_test.c:52 suspend_test_finish+0x7c/0x80()
Hardware name: Latitude D820                   
Component: resume devices
Modules linked in: nls_iso8859_1 nls_cp437 vfat fat binfmt_misc bridge stp bnep snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi arc4 snd_rawmidi snd_seq_midi_event pcmcia ecb snd_seq iwl3945 snd_timer snd_seq_device btusb iwlcore yenta_socket snd mac80211 usbhid soundcore rsrc_nonstatic led_class snd_page_alloc usb_storage nvidia(P) joydev pcmcia_core intel_agp irda cfg80211 ppdev dell_wmi crc_ccitt dell_laptop dcdbas iptable_filter video output parport_pc psmouse serio_raw ip_tables x_tables lp parport dm_raid45 ohci1394 ieee1394 xor tg3
Pid: 20500, comm: pm-suspend Tainted: P           2.6.31-12-generic #39-Ubuntu
Call Trace:
 [<ffffffff810597d8>] warn_slowpath_common+0x78/0xb0
 [<ffffffff8105986c>] warn_slowpath_fmt+0x3c/0x40
 [<ffffffff8108e54c>] suspend_test_finish+0x7c/0x80
 [<ffffffff8108e2f9>] suspend_devices_and_enter+0xa9/0xe0
 [<ffffffff8108e408>] enter_state+0xd8/0x110
 [<ffffffff8108d9c2>] state_store+0x92/0x100
 [<ffffffff8126f1d7>] kobj_attr_store+0x17/0x20
 [<ffffffff8117f7c0>] sysfs_write_file+0xe0/0x160
 [<ffffffff81119e28>] vfs_write+0xb8/0x1a0
 [<ffffffff81526224>] ? do_page_fault+0x194/0x370
 [<ffffffff8111a8dc>] sys_write+0x4c/0x80
 [<ffffffff81011fc2>] system_call_fastpath+0x16/0x1b
---[ end trace 7958938ef744f46e ]---