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From: Oliver Neukum <oliver@neukum.org>
Organization: NOvell
To: Alan Stern <stern@rowland.harvard.edu>
Subject: Re: [PATCH] USB: fix deadlock in HCD code
Date: Wed, 21 May 2008 22:03:13 +0200
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Cc: Jiri Kosina <jkosina@suse.cz>, Greg KH <greg@kroah.com>,
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Am Mittwoch 21 Mai 2008 16:46:45 schrieb Alan Stern:
> One possibility is that in an earlier call to finish_urb,
> usb_hcd_giveback_urb was called with interrupts disabled and returned 
> with interrupts enabled.  In other words, some driver's callback 
> routine may have enabled interrupts incorrectly.

Are we sure the interrupt line is not shared with another driver that calls
spin_unlock_irq() in its interrupt handler?

	Regards
		Oliver