From: Jiri Slaby <jirislaby@gmail.com>
To: H Hartley Sweeten <hartleys@visionengravers.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
devel@driverdev.osuosl.org, ss@aao.gov.au, gregkh@suse.de
Subject: Re: [PATCH] Staging: dt3155: Remove copy_to_user for ioctl's DT3155_{STOP|START}
Date: Wed, 21 Jul 2010 09:57:16 +0200 [thread overview]
Message-ID: <4C46A85C.2090608@gmail.com> (raw)
In-Reply-To: <201007201757.52928.hartleys@visionengravers.com>
On 07/21/2010 02:57 AM, H Hartley Sweeten wrote:
> The ioctl's DT3155_STOP and DT3155_START are defined with the macro
> _IO indicating that they have no parameters. They should not be using
> copy_to_user to return data to user space.
This is not a reason for removing them. You should check what real users
do/expect and base your reasoning on the top of that.
So could you investigate that?
regards,
--
js
next prev parent reply other threads:[~2010-07-21 7:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-21 0:57 [PATCH] Staging: dt3155: Remove copy_to_user for ioctl's DT3155_{STOP|START} H Hartley Sweeten
2010-07-21 7:57 ` Jiri Slaby [this message]
2010-07-22 17:55 ` Greg KH
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