Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751101AbdCHISU (ORCPT ); Wed, 8 Mar 2017 03:18:20 -0500 Received: from mail-it0-f68.google.com ([209.85.214.68]:35676 "EHLO mail-it0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750714AbdCHISS (ORCPT ); Wed, 8 Mar 2017 03:18:18 -0500 MIME-Version: 1.0 In-Reply-To: <871su87gag.wl%kuninori.morimoto.gx@renesas.com> References: <871su87gag.wl%kuninori.morimoto.gx@renesas.com> From: Geert Uytterhoeven Date: Wed, 8 Mar 2017 09:17:32 +0100 X-Google-Sender-Auth: --T9NPdiVABLMJynmwHgvEzgFGY Message-ID: Subject: Re: [PATCH v2] dmaengine: rcar-dmac: enable descriptor mode on 40bit To: Kuninori Morimoto Cc: Vinod Koul , Laurent Pinchart , Geert Uytterhoeven , dmaengine@vger.kernel.org, "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 990 Lines: 25 On Wed, Mar 8, 2017 at 1:42 AM, Kuninori Morimoto wrote: > From: Kuninori Morimoto > > SYS-DMAC can use 40bit address transfer, and it supports Descriptor > Mode too. Current SYS-DMAC driver disables Descriptor Mode if it was > 40bit address today. But it can use Descriptor Mode with 40bit if > transfer Source/Destination address are located in same 4GiB region > in the 40 bit address space. > This patch enables it if all condition was clear > > Signed-off-by: Kuninori Morimoto Reviewed-by: Geert Uytterhoeven Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds