From: Oliver Neukum <oliver@neukum.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Jiri Kosina <jkosina@suse.cz>, Greg KH <greg@kroah.com>,
linux-usb@vger.kernel.org, lchiquitto@novell.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] USB: fix deadlock in HCD code
Date: Wed, 21 May 2008 22:03:13 +0200 [thread overview]
Message-ID: <200805212203.14187.oliver@neukum.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0805211042070.2490-100000@iolanthe.rowland.org>
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
next prev parent reply other threads:[~2008-05-21 20:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-21 12:09 [PATCH] USB: fix deadlock in HCD code Jiri Kosina
2008-05-21 13:21 ` Oliver Neukum
2008-05-21 13:27 ` Jiri Kosina
2008-05-21 13:32 ` Oliver Neukum
2008-05-21 13:36 ` Jiri Kosina
2008-05-21 13:47 ` Oliver Neukum
2008-05-21 14:13 ` Alan Stern
2008-05-21 14:22 ` Jiri Kosina
2008-05-21 14:46 ` Alan Stern
2008-05-21 19:32 ` Leonardo Chiquitto
2008-05-21 20:03 ` Oliver Neukum [this message]
2008-05-21 14:29 ` David Vrabel
2008-05-21 14:42 ` Alan Stern
2008-05-21 14:53 ` David Vrabel
2008-05-21 14:58 ` Alan Stern
2008-05-21 14:31 ` Oliver Neukum
2008-05-21 13:40 ` Oliver Neukum
2008-05-21 22:26 ` Peter Zijlstra
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