From: Jeff Garzik <jeff@garzik.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Arnd Bergmann <arnd@arndb.de>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>
Subject: Re: [RFC] Remove or convert empty ioctls ?
Date: Thu, 15 Oct 2009 11:35:45 -0400 [thread overview]
Message-ID: <4AD74151.7020306@garzik.org> (raw)
In-Reply-To: <20091015163103.5e42fabe@lxorguk.ukuu.org.uk>
On 10/15/2009 11:31 AM, Alan Cox wrote:
> EINVAL means you used an ioctl that is correct for the driver but that
> for some reason the driver didn't like it.
Precisely.
The driver author proactively chose to implement the ioctl and return a
value other than ENOTTY.
It is invalid to assume that all such cases are a direct result of
author mistakes or ignorance.
Jeff
next prev parent reply other threads:[~2009-10-15 15:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-15 9:20 [RFC] Remove or convert empty ioctls ? Thomas Gleixner
2009-10-15 12:12 ` Jeff Garzik
2009-10-15 15:01 ` Alan Cox
2009-10-15 15:22 ` Jeff Garzik
2009-10-15 15:31 ` Alan Cox
2009-10-15 15:35 ` Jeff Garzik [this message]
2009-10-15 15:49 ` Alan Cox
2009-10-15 16:03 ` Jeff Garzik
2009-10-15 16:23 ` Thomas Gleixner
2009-10-15 16:28 ` Thomas Gleixner
2009-10-15 15:50 ` Ingo Molnar
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