linux-kernel - Re: [PATCH 1/1] drivers: staging: vt6655: ioctl.c

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Message-ID: <20140729080538.GA16199@distanz.ch>
Date:	Tue, 29 Jul 2014 10:05:38 +0200
From:	Tobias Klauser <tklauser@...tanz.ch>
To:	Anil Belur <askb23@...il.com>
Cc:	bjorn@...k.no, silvio.fricke@...il.com, gregkh@...uxfoundation.org,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] drivers: staging: vt6655: ioctl.c - missing __user
 annotation

On 2014-07-28 at 09:58:12 +0200, Anil Belur <askb23@...il.com> wrote:
> From: Anil Belur <askb23@...il.com>
> 
> - private_ioctl() the internally calls copy_{to,from}_user() and does
>   not use '__user' while refrencing user space pointers.
> - this patch passes __user annotation as a cast, when the pointer is
>  being refernced.

Wouldn't it be better to annotate the data member in struct tagSCmdRequest
with __user instead of introducing all these casts?
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