From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751799AbaBXFed (ORCPT ); Mon, 24 Feb 2014 00:34:33 -0500 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:50535 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750899AbaBXFeb (ORCPT ); Mon, 24 Feb 2014 00:34:31 -0500 Date: Mon, 24 Feb 2014 10:35:42 +0900 From: Mark Brown To: Geert Uytterhoeven Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Message-ID: <20140224013542.GS25940@sirena.org.uk> References: <1392999293-5015-1-git-send-email-geert@linux-m68k.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="omE/1KreAogPZIYx" Content-Disposition: inline In-Reply-To: <1392999293-5015-1-git-send-email-geert@linux-m68k.org> X-Cookie: You're at the end of the road again. User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: 121.174.50.227 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH] [RFC] spi: spidev: Add support for Dual/Quad SPI Transfers X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --omE/1KreAogPZIYx Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Feb 21, 2014 at 05:14:53PM +0100, Geert Uytterhoeven wrote: > The Kconfig entry for SPI_SPIDEV states: > Note that this application programming interface is EXPERIMENTAL > and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes. > So it's OK to break binary compatibility? > Or should we introduce PI_IOC_RD_MODE16 and SPI_IOC_WR_MODE16 instead? I think it's been experimental for so long that it has become a stable interface I'm afraid - the new calls would be better. Why not go for 32 bits instead of 16 bits for the new calls, that way it'll take longer to fill up again? --omE/1KreAogPZIYx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJTCqHrAAoJELSic+t+oim90wcP/RclwU+j+4jb+6svGjGbRkDW i6cO1OU+bGBsrHUPzaqqpqi1nknpA4A4ZY9rduGB1+5kDD1YyBUa7Ia4AdQWG9B2 rJmBbyDBM8E1g0PinlcDkDQ9UMB9OQMGRrlmJHapH11Tl0TfoHY/oqACLOMD8yb8 mNnG43w3ZFRdsPvO9GRP+jw1cFEKI87GJsF8XoTPLa4CSUE4uhYbfn+VW+2uaHn3 pCSBOMW8gSEdinBkMaN2puRJCZMgpnSVSHyR9cNRfBfg/kl/dO6MDiT80ZjYJg8X jYIcfHAe+vkSKXV738vzCM5fNq9MDJd/vnPIjLHNc5tXGzO2WAvzQ2hwOtkT67S8 gRnwu7gzPi5PJEBXHQWPAiicmwtkRc/cOAeG4iqb65/YNruAuGu0/hmR3glQuynV v4aZQRPIL0g86zt2inLT87cKPuBwuM1m8PqxtDmPA6HUShdWTyZd6/u2jzgkpUWr CGAzG5y5VHZvjLgHiRJn+Ae8X7cKnCESGpFrTFGCinFbElEE1+Ll9MdjSEgUmFFc v7sMY+57ViTQXdgeN7nrmtBxLcZ/oag1O+rB6Hdpf7NVzGbtsreD/+/TBtKac0Q7 kWdq63JswcS5Oc7ZV8PowTIrKkMZfegk+48e2MC4DgTjAZrMsli/qfTvuJy9hVDn XPUbsRXiRZGlC0fhlQlT =2ceX -----END PGP SIGNATURE----- --omE/1KreAogPZIYx--