linux-kernel - Re: core: workque: workqueue recursion when unplugging usb WCDMA modem on 2.6.32 kernel

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Message-ID: <s2qd6200be21004221628nd2a93a29x7eab5841bba1c673@mail.gmail.com>
Date:	Thu, 22 Apr 2010 16:28:07 -0700
From:	Arve Hjønnevåg <arve@...roid.com>
To:	YuPing Luo <YuPing.Luo@....com>
Cc:	Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: core: workque: workqueue recursion when unplugging usb WCDMA 
	modem on 2.6.32 kernel

On Wed, Apr 21, 2010 at 8:15 PM, YuPing Luo <YuPing.Luo@....com> wrote:
>> > On Tue, Apr 20, 2010 at 11:27:55PM -0700, YuPing Luo wrote:
>> 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?
>> greg k-h
>
>  The console is over serial port, while the usb modem exported 2 serial
> ports .

I don't think this is related to your console. I could easily
reproduce your problem by killing rild (which uses both the binder and
ttys). You may also what to find out why your rild is exiting.

>  The recursion can be avoided if introducing one dedicated work queue
> thread for binder (

I just pushed a fix that does exactly that.

-- 
Arve Hjønnevåg
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