netdev - Re: [PATCH] qlge: Fix a deadlock when the interface is going down

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Message-ID: <20100825144230.GA12700@linux-ox1b.qlogic.org>
Date:	Wed, 25 Aug 2010 07:42:30 -0700
From:	Ron Mercer <ron.mercer@...gic.com>
To:	"leitao@...ux.vnet.ibm.com" <leitao@...ux.vnet.ibm.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] qlge: Fix a deadlock when the interface is going down

On Tue, Aug 24, 2010 at 03:50:40PM -0700, leitao@...ux.vnet.ibm.com wrote:
> Currently qlge can deadlock when the interface is going
> down, and the mpi_port_cfg_work() is executing on another
> processor. It happens because unregister_netdev() holds
> the rtnl lock, and the mpi_port_cfg_work() also request
> this lock.
> 
> Since unregiter_netdev() may wait mpi_port_cfg_work(), who
> also request the holding lock, it can cause an deadlock,
> displaying the following error:
> 

Thanks Breno.

Signed-off-by: Ron Mercer <ron.mercer@...gic.com>
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