linux-kernel - Re: [PATCH v4] uio: Fix uio driver to refcount device

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Message-ID: <20150319132133.GA3458@kroah.com>
Date:	Thu, 19 Mar 2015 14:21:33 +0100
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Brian Russell <brian.russell@...cade.com>
Cc:	"Hans J. Koch" <hjk@...sjkoch.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] uio: Fix uio driver to refcount device

On Thu, Mar 19, 2015 at 01:16:13PM +0000, Brian Russell wrote:
> Protect uio driver from its owner being unplugged while there are open fds.
> Embed struct device in struct uio_device, use refcounting on device, free
> uio_device on release.
> info struct passed in uio_register_device can be freed on unregister, so null
> out the field in uio_urnegister_device and check accesses.
> 
> Signed-off-by: Brian Russell <brussell@...cade.com>
> ---
>  drivers/uio/uio.c          | 63 +++++++++++++++++++++++++++++++---------------
>  include/linux/uio_driver.h |  2 +-
>  2 files changed, 44 insertions(+), 21 deletions(-)

when sending new versions, you need to list down here what changed from
the previous version.  Please send a v5 with that, as I don't see what
changed between v3 and v4 very easily.

thanks,

greg k-h
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