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From: Greg KH <greg@kroah.com>
To: YuPing Luo <YuPing.Luo@csr.com>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: core: workque: workqueue recursion when unplugging usb WCDMA modem on 2.6.32 kernel
Date: Wed, 21 Apr 2010 11:27:47 -0700	[thread overview]
Message-ID: <20100421182747.GB7876@kroah.com> (raw)
In-Reply-To: <ED2979D1CA1B3E4BB166ED9990088522765C8C@SJOAMSEXB01.AMERICAS.ROOT.PRI>

On Tue, Apr 20, 2010 at 11:27:55PM -0700, YuPing Luo wrote:
> Hi,
>    I have one ARM11-based board, while upgrading the kernel from 27 to
> 32, got the workqueue recursion warning almost, and the console get
> lost. While the issue can be resolved by applying the patch "[PATCH v2]
> core: workqueue: return on workqueue recursion", and I am still
> struggling to find the root cause. 

Is your console on a usb to serial device?  Or a serial port?

if usb to serial, can you try .33-rc5 and let us know if that solves the
problem?

thanks,

greg k-h

  reply	other threads:[~2010-04-21 18:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-21  6:27 YuPing Luo
2010-04-21 18:27 ` Greg KH [this message]
2010-04-22  3:15   ` YuPing Luo
2010-04-22  3:41     ` Greg KH
2010-04-22 23:28     ` Arve Hjønnevåg
2010-04-23  2:46       ` YuPing Luo

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