linux-kernel - Re: [PATCH 1/3] usb console: fix mutex lock regression

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Message-ID: <4AB1ADD7.10600@windriver.com>
Date:	Wed, 16 Sep 2009 22:32:39 -0500
From:	Jason Wessel <jason.wessel@...driver.com>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	gregkh@...e.de, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] usb console: fix mutex lock regression

Alan Stern wrote:
> On Wed, 16 Sep 2009, Jason Wessel wrote:
>
>   
>> During the 2.6.32 development the use of serial->disc_mutex was
>> introduced.  In usb_console_setup() the call to
>> usb_serial_get_by_index() will obtain this mutex. The
>> usb_console_setup() must release the mutex before it completes else
>> later calls to the usb serial core will hang.
>>     
>
> Apparently you didn't see my patch:
>
> 	http://marc.info/?l=linux-usb&m=125209260714221&w=2
>
> Did this not get into linus-next?  Greg?
>
>   

Maybe it was not merged at the time.   We'll wait to hear from Greg.

Certainly I would opt to use your more complete implementation. 


Jason.
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