* Fengguang Wu | 2013-03-05 18:35:13 [+0800]:

>Note that I still get this warning, however looks like an unrelated
>issue:
>
>[  602.536679] [ INFO: possible circular locking dependency detected ]
>[  602.536672] 
>[  602.536679] ======================================================
>[  602.536679] [ INFO: possible circular locking dependency detected ]
>[  602.536693] 3.8.0-bisect-next-20130301-dirty #212 Not tainted
>[  602.536694] -------------------------------------------------------
>[  602.536698] kworker/0:1/27 is trying to acquire lock:
>[  602.536750]  (&fb_info->lock){+.+.+.}, at: [<ffffffff814c0176>] 
>lock_fb_info+0x26/0x60
>[  602.536751] 
>[  602.536751] but task is already holding lock:
>[  602.536773]  (console_lock){+.+.+.}, at: [<ffffffff815a6a13>] 
>console_callback+0x13/0x150
>[  602.536774]                 
>[  602.536774] which lock already depends on the new lock.

This does not look good but it does not like USB. It looks more like the
tty/fb area.

>Thanks,
>Fengguang

Sebastian
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