linux-kernel - Re: [PATCH 1/5] drivers:tty:fix up ENOIOCTLCMD error handling

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Date:	Mon, 27 Aug 2012 23:42:31 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Wanlong Gao <gaowanlong@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 1/5] drivers:tty:fix up ENOIOCTLCMD error handling

On Mon, 27 Aug 2012 15:23:12 +0800
Wanlong Gao <gaowanlong@...fujitsu.com> wrote:

> At commit 07d106d0, Linus pointed out that ENOIOCTLCMD should be
> translated as ENOTTY to user mode.
> For example:
> 	fd = open("/dev/tty", O_RDWR);
> 	ioctl(fd, -1, &argp);
> 
> then the errno should be ENOTTY but not EINVAL.
> 
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Wanlong Gao <gaowanlong@...fujitsu.com>

Acked-by: Alan Cox <alan@...ux.intel.com>
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