------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.31/drivers/staging/at76_usb/at76_usb.c:4048 at76_work_start_scan+0x152/0x1b0 [at76_usb]()
Hardware name: System Product Name
Modules linked in: deflate zlib_deflate ctr twofish twofish_common camellia serpent blowfish cast5 des_generic cbc cryptd aes_x86_64 aes_generic xcbc rmd160 sha256_generic sha1_generic crypto_null af_key lp tuner_simple ppdev parport_pc tuner_types parport wm8775 snd_intel8x0 snd_ac97_codec ac97_bus tda9887 snd_pcm_oss snd_mixer_oss tda8290 snd_pcm snd_seq_dummy tea5767 snd_seq_oss tuner snd_seq_midi cx25840 snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ivtv cx2341x v4l2_common videodev v4l1_compat iptable_filter v4l2_compat_ioctl32 snd tveeprom joydev asus_atk0110 ip_tables at76_usb(C) soundcore amd64_edac_mod x_tables shpchp snd_page_alloc edac_core k8temp psmouse serio_raw hid_microsoft usbhid usb_storage radeon ttm drm i2c_algo_bit floppy e1000
Pid: 10, comm: events/1 Tainted: G         C 2.6.31-14-generic #48-Ubuntu
Call Trace:
 [<ffffffff8105e788>] warn_slowpath_common+0x78/0xb0
 [<ffffffff8105e7cf>] warn_slowpath_null+0xf/0x20
 [<ffffffffa01b5df2>] at76_work_start_scan+0x152/0x1b0 [at76_usb]
 [<ffffffffa01b5ca0>] ? at76_work_start_scan+0x0/0x1b0 [at76_usb]
 [<ffffffff810737a5>] run_workqueue+0x95/0x170
 [<ffffffff81073924>] worker_thread+0xa4/0x120
 [<ffffffff81078b30>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff81073880>] ? worker_thread+0x0/0x120
 [<ffffffff81078746>] kthread+0xa6/0xb0
 [<ffffffff810130ea>] child_rip+0xa/0x20
 [<ffffffff810786a0>] ? kthread+0x0/0xb0
 [<ffffffff810130e0>] ? child_rip+0x0/0x20
---[ end trace e0def61a95823ef5 ]---