Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753567AbZK0Aed (ORCPT ); Thu, 26 Nov 2009 19:34:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753431AbZK0Aed (ORCPT ); Thu, 26 Nov 2009 19:34:33 -0500 Received: from moutng.kundenserver.de ([212.227.126.187]:49319 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752892AbZK0Aec (ORCPT ); Thu, 26 Nov 2009 19:34:32 -0500 From: Arnd Bergmann To: Krzysztof Halasa Subject: Re: [RFC] Should we create a raw input interface for IR's ? - Was: Re: [PATCH 1/3 v2] lirc core device driver infrastructure Date: Fri, 27 Nov 2009 00:34:30 +0000 User-Agent: KMail/1.12.2 (Linux/2.6.31-14-generic; KDE/4.3.2; x86_64; ; ) Cc: Mauro Carvalho Chehab , Jarod Wilson , Dmitry Torokhov , linux-kernel@vger.kernel.org, Mario Limonciello , linux-input@vger.kernel.org, linux-media@vger.kernel.org, Janne Grunau , Christoph Bartelmus References: <200910200956.33391.jarod@redhat.com> <4B0EFC30.80208@redhat.com> In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200911270034.30957.arnd@arndb.de> X-Provags-ID: V01U2FsdGVkX18Bxj2spHHk4n75VeR84LzUZ9d7ocBIelSjaSU mACGuna/H8NsLv/c7vRR7CXUMGXNB7+cBRONLdDmxx8623E7AP cez3kSPZCxXhgst8hHJsA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 851 Lines: 22 On Friday 27 November 2009 00:19:44 Krzysztof Halasa wrote: > Mauro Carvalho Chehab writes: > > > Why do you want to replace everything into a single shot? > > Why not? It seems simpler to me. We need to change this anyway. ioctls with a variable argument length are a pain for 32 bit emulation and stuff like strace. You either need to encode the variable length into the ioctl cmd, making it variable as well, or use a pointer in the data structure, which requires conversion. Ideally, ioctl arguments have a constant layout, no pointers and are at most 64 bits long. Arnd <>< -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/