From patchwork Tue Aug 14 13:49:31 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Genoud X-Patchwork-Id: 1319601 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id E236DDF215 for ; Tue, 14 Aug 2012 14:01:33 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1T1Hc3-0004Ep-5Z; Tue, 14 Aug 2012 13:56:52 +0000 Received: from mail-we0-f177.google.com ([74.125.82.177]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1T1HW8-0000bR-Dk for linux-arm-kernel@lists.infradead.org; Tue, 14 Aug 2012 13:50:49 +0000 Received: by mail-we0-f177.google.com with SMTP id r3so277976wey.36 for ; Tue, 14 Aug 2012 06:50:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=sen0LZj9sQuWCy+kkY58wgPXOupQuIz9plgxZsv5MFw=; b=fneWjkVsqJT7eGRJpU1Apg23WZdnETd/BinZLufuFLHzJeHzSagnyI4F1bYRiLnsyx B/IHrrFsV0hPsLSoF2Kru+mMGG3/7K5nnPiyCE+31R90xzOc17ppHEQjm32V4n2UpM+/ Ba4LD6brNRp6fF/xFX1JN3fdFjDa+eXL31X3Re+7JwWTj/1VZovcj75OTjwD16YCV2is jQ/8weFtUwVKrAZ0hZ3RdWzb4SS4ljhv5n/gAac1RN5crv2KgVb/diaYiGzLWDTzuULL 83Ke82/Hya4jUEuHHgddn/XqScTai0fNu0YIX5HI9lZ2T04xt4wKNSbYckXxGSLNFAqW 351Q== Received: by 10.180.81.193 with SMTP id c1mr28101568wiy.12.1344952244068; Tue, 14 Aug 2012 06:50:44 -0700 (PDT) Received: from localhost.localdomain (lyon.paratronic.fr. [213.41.177.106]) by mx.google.com with ESMTPS id eu4sm22509397wib.2.2012.08.14.06.50.42 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 14 Aug 2012 06:50:43 -0700 (PDT) From: Richard Genoud To: Nicolas Ferre Subject: [PATCH 17/23] [BUG] atmel-spi && DMA: OOPS if buffer > 4400 bytes Date: Tue, 14 Aug 2012 15:49:31 +0200 Message-Id: <1344952177-18385-18-git-send-email-richard.genoud@gmail.com> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1344952177-18385-1-git-send-email-richard.genoud@gmail.com> References: <1344952177-18385-1-git-send-email-richard.genoud@gmail.com> X-Spam-Note: CRM114 invocation failed X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [74.125.82.177 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (richard.genoud[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Cc: Richard Genoud , Jean-Christophe PLAGNIOL-VILLARD , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org this is just a quick and suboptimal workaround --- drivers/spi/spi-atmel.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index d629422..0899da2 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -638,7 +638,8 @@ static void atmel_spi_next_xfer(struct spi_master *master, as->current_transfer = xfer; - if (atmel_spi_use_dma(xfer)) { + /* quick (and *really* not optimal) workaround for DMA BUG */ + if (atmel_spi_use_dma(xfer) && (xfer->len < BUFFER_SIZE)) { if (!atmel_spi_next_xfer_dma(master, xfer)) return; else