linux-kernel - Re: [PATCH] driver-core: fix race between device_register and driver

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Message-ID: <20110412171343.GA2745@suse.de>
Date:	Tue, 12 Apr 2011 10:13:43 -0700
From:	Greg KH <gregkh@...e.de>
To:	Sebastian Ott <sebott@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] driver-core: fix race between device_register and
 driver_register

On Tue, Apr 12, 2011 at 07:05:37PM +0200, Sebastian Ott wrote:
> 
> When a device is registered to a bus it will be a) added to the list
> of devices of the bus and b) bind to a driver (if one matches). As a
> result of a driver being registered at this bus between a) and b) this
> device could already be bound to a driver. This leads to a warning
> and incorrect refcounting.
> To fix this add a check to device_attach to identify an already bound
> device.
> 
> Signed-off-by: Sebastian Ott <sebott@...ux.vnet.ibm.com>

Thanks, I'll queue this up for .40.

greg k-h
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