Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756549AbcKBRr6 (ORCPT ); Wed, 2 Nov 2016 13:47:58 -0400 Received: from up.free-electrons.com ([163.172.77.33]:45849 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756355AbcKBRr4 (ORCPT ); Wed, 2 Nov 2016 13:47:56 -0400 Date: Wed, 2 Nov 2016 18:47:53 +0100 From: Maxime Ripard To: Mark Brown Cc: Alexandru Gagniuc , wens@csie.org, linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v7] spi: sun4i: Allow transfers larger than FIFO size Message-ID: <20161102174753.elbukxnrc3x27xxc@lukather> References: <1477465231-17704-1-git-send-email-mr.nuke.me@gmail.com> <20161026085528.vjjypbfmfbhvileb@lukather> <20161027111419.GK25322@sirena.org.uk> <20161027212727.leqg3gvwhd3u64er@lukather> <20161027224712.GY25322@sirena.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="7eofhf2lw3xmi3lr" Content-Disposition: inline In-Reply-To: <20161027224712.GY25322@sirena.org.uk> User-Agent: Mutt/1.6.2-neo (2016-08-21) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1956 Lines: 53 --7eofhf2lw3xmi3lr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Mark, On Thu, Oct 27, 2016 at 11:47:12PM +0100, Mark Brown wrote: > > > If the concern from the previous reviews to do with not using DMA is > > > there some reason it's hard to do DMA? >=20 > > I think just like Alexandru that it is orthogonal. But to really > > answer, no, it's not difficult. There's just been some fundamental > > disagreement on whether DMA was supposed to be optional or not that > > stalled everything I guess. >=20 > Oh, I seem to remember some patches adding DMA support that were doing > some strange special snowflake thing with ignoring errors now that I > think about it but that's not this one... why did nobody ever follow up > on those? I have no idea. I think last time we discussed this was last July. Especially with this in now, there's probably no rush anyway. Maxime --=20 Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com --7eofhf2lw3xmi3lr Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIcBAEBCAAGBQJYGibEAAoJEBx+YmzsjxAg8xcP/1VLSmk7F7b0Xcxonymz9dO8 kqdwJSn3q9eJSaSkUqKRsQBdau6FdW9/c9uAKTJL5aurfzH+zaRW5RkVKpGdHdjy 2gpliBYHP5b8B1Cfvt3bKV/efKBpppKOcSr+pWya8DysjAmjFAV3+nNAAAC/XYn6 eKGL1lBk9JVnZt8VbTR4LlJJVsXVI1E2T+D/dSDbXv2bs87R+io2qFofMKBFBsA4 x7jlEpbf7QlVu+YHZL6cJmVVdp4UFhT1D/zq5LAwVEpa0XVcap16AOlbjpAh+nXf eDtBIbYSMunTwKkrLKBXWZVx6M8/3NLQWq4VrQd1bJ1CpGxX9f0rLwRdkgg2FupY TSVnSi/bb1XkbkJ86+uMPQ00fX+vGmv41Km39TC3rHrp3a+sHhBFt5VuGxmCrUhA qsp1rSwulMT2A9kjX7aCpVq6HiE26VpjfM8KRt0hwL4PkYffi/yt3+jRXDGy/G35 Wj9Z6YDMNDs3Jzv7vblPzvhiiCcZOicDFlotVsGajcgmwlE+6n3gckFWU8ZxfJ+g JskR8+YuTvAy0ZPxkhDHKoWDEuo+hItP2gPJEBzZ1Q7LrqKDeGQER7a5aoAzjLBA 7u930UdKm45uSNu5mMHuVC/+4zLjSfYTkyEgIePOtXxr5YifRV+H3MYxMsiJ1C38 TYFaP3iZqZGmZPnU1hEM =GM2B -----END PGP SIGNATURE----- --7eofhf2lw3xmi3lr--