From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13F7EC43466 for ; Mon, 21 Sep 2020 10:20:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C9881207BC for ; Mon, 21 Sep 2020 10:19:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="YIlbcdmf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726688AbgIUKT6 (ORCPT ); Mon, 21 Sep 2020 06:19:58 -0400 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:18229 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726326AbgIUKT5 (ORCPT ); Mon, 21 Sep 2020 06:19:57 -0400 Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Mon, 21 Sep 2020 03:19:44 -0700 Received: from HQMAIL111.nvidia.com (172.20.187.18) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 21 Sep 2020 10:19:56 +0000 Received: from [192.168.22.23] (10.124.1.5) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 21 Sep 2020 10:19:54 +0000 From: Thierry Reding To: Dmitry Osipenko CC: Thierry Reding , Jonathan Hunter , Laxman Dewangan , Wolfram Sang , =?utf-8?q?Micha=C5=82_Miros=C5=82aw?= , Andy Shevchenko , , , Subject: Re: [PATCH v7 21/34] i2c: tegra: Don't fall back to PIO mode if DMA configuration fails In-Reply-To: <20200908224006.25636-22-digetx@gmail.com> References: <20200908224006.25636-22-digetx@gmail.com> X-NVConfidentiality: public Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit MIME-Version: 1.0 Message-ID: Date: Mon, 21 Sep 2020 10:19:54 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1600683584; bh=rj4+M6DD6otkwDGZkPtBHSzGMkXryvZLbVWueeLZG8A=; h=From:To:CC:Subject:In-Reply-To:References:X-NVConfidentiality: Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID: Date; b=YIlbcdmfvAOSf6IRQiDvnctM4mFiaFDgvqCZLM+Ie38OJYsafI0u1Zjt3lTXCcfKM XwWqIjV6F8LhEEcJoBE6CdisPfp+k7SUe/6MvaMxyB85+qlyUK9u8JePSQNb5Qwynk NEpLjRy/g2l6rQL9+XkTazAz9EYh2ApW6OFYirmM7ykmq7cZIbtfLqReGJQeQCnkQi rI+mPO7hJRn3iiMP+yYcFPrLCvZhI4H6EN3XmhqpXLx2ILu1gMkYYA/utOZSh3/+wb 0rZfJfq5h61NFPkqOeuJ4Npo9okSiacxoO6+MJ4JAoAN/nxTWjpxAHdhWkE0sLHjLy 6g4jKs6bc36QA== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 09 Sep 2020 01:39:53 +0300, Dmitry Osipenko wrote: > The DMA code path has been tested well enough and the DMA configuration > performed by tegra_i2c_config_fifo_trig() shouldn't ever fail in practice. > Hence let's remove the obscure transfer-mode switching in order to have a > cleaner and simpler code. Now I2C transfer will be failed if DMA > configuration fails. > > Signed-off-by: Dmitry Osipenko > --- > drivers/i2c/busses/i2c-tegra.c | 18 ++++++++++-------- > 1 file changed, 10 insertions(+), 8 deletions(-) Tested-by: Thierry Reding