linux-kernel - Re: [PATCH] USB: fix deadlock in HCD code

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Message-Id: <1211408768.29104.3.camel@twins>
Date:	Thu, 22 May 2008 00:26:08 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	Greg KH <greg@...ah.com>, linux-usb@...r.kernel.org,
	Oliver Neukum <oneukum@...e.de>,
	Alan Stern <stern@...land.harvard.edu>, lchiquitto@...ell.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: fix deadlock in HCD code

On Wed, 2008-05-21 at 14:09 +0200, Jiri Kosina wrote:
> hcd_urb_list_lock is used for synchronization between IRQ and non-IRQ 
> contexts, so the non-IRQ context has to disable IRQs in order to prevent 
> deadlocking with IRQ context.

Just wondering,... doesn't lockdep say anything about the situation?

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