From: Greg KH <greg@kroah.com>
To: David Brownell <david-b@pacbell.net>
Cc: davidm@hpl.hp.com, linux-kernel@vger.kernel.org,
linux-ia64@linuxia64.org, linux-usb-devel@lists.sourceforge.net
Subject: Re: USB deadlock in v2.5.67
Date: Fri, 18 Apr 2003 16:19:04 -0700 [thread overview]
Message-ID: <20030418231904.GA9090@kroah.com> (raw)
In-Reply-To: <3EA01DF0.9080305@pacbell.net>
On Fri, Apr 18, 2003 at 08:46:56AM -0700, David Brownell wrote:
> Greg KH wrote:
> >On Thu, Apr 17, 2003 at 07:02:07PM -0700, David Mosberger wrote:
> >
> >><hcd_free_dev+0x140> translates into line 1249 in hcd.c, where it
> >>does:
> >>
> >> spin_lock_irqsave (&hcd_data_lock, flags);
> >>
> >>The deadlock is pretty obvious: the same lock has already been
> >>acquired urb_unlink(), 4 levels up in the call-chain.
> >>
> >>Anybody have a fix for this?
> >
> >
> >David (Brownell, that is), does this help with the trace I sent you a
> >few hours ago?
>
> Seems to be a different problem. The patch below should
> resolve the keyboard problem -- just reorders two lines
> so the lock isn't held after the device's records get
> deleted, so the order is what it should always have been.
Applied to my trees, thanks.
greg k-h
prev parent reply other threads:[~2003-04-18 23:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-18 2:02 USB deadlock in v2.5.67 David Mosberger
2003-04-18 4:50 ` Greg KH
2003-04-18 15:46 ` David Brownell
2003-04-18 18:16 ` David Mosberger
2003-04-18 23:19 ` Greg KH [this message]
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