From patchwork Fri Sep 27 19:44:04 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 2956701 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id CCB1D9F289 for ; Fri, 27 Sep 2013 19:44:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BEA342025B for ; Fri, 27 Sep 2013 19:44:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EF181202C7 for ; Fri, 27 Sep 2013 19:44:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754173Ab3I0Tom (ORCPT ); Fri, 27 Sep 2013 15:44:42 -0400 Received: from cassiel.sirena.org.uk ([80.68.93.111]:57285 "EHLO cassiel.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750981Ab3I0Toj (ORCPT ); Fri, 27 Sep 2013 15:44:39 -0400 Received: from cpc11-sgyl31-2-0-cust68.sgyl.cable.virginmedia.com ([94.175.92.69] helo=finisterre) by cassiel.sirena.org.uk with esmtpsa (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1VPdxp-0000ti-Jh; Fri, 27 Sep 2013 20:44:36 +0100 Received: from broonie by finisterre with local (Exim 4.80) (envelope-from ) id 1VPdxo-0000GU-IX; Fri, 27 Sep 2013 20:44:32 +0100 From: Mark Brown To: Kukjin Kim Cc: linux-samsung-soc@vger.kernel.org, linux-spi@vger.kernel.org, linaro-kernel@lists.linaro.org, =?UTF-8?q?=C5=81ukasz=20Czerwi=C5=84ski?= , Mark Brown Date: Fri, 27 Sep 2013 20:44:04 +0100 Message-Id: <1380311049-973-1-git-send-email-broonie@kernel.org> X-Mailer: git-send-email 1.8.4.rc3 X-SA-Exim-Connect-IP: 94.175.92.69 X-SA-Exim-Mail-From: broonie@sirena.org.uk X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-9.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Subject: [PATCH 1/6] spi/s3c64xx: Flush FIFOs prior to cleaning up transfer X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:57:07 +0000) X-SA-Exim-Scanned: Yes (on cassiel.sirena.org.uk) Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Mark Brown Ensure that the FIFOs are fully drained before we deassert /CS or do any delays that have been requested in order to ensure that the behaviour visible on the bus matches that which was requested by the caller. Signed-off-by: Mark Brown --- drivers/spi/spi-s3c64xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 229c6b9..2e267ce 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -960,6 +960,8 @@ static int s3c64xx_spi_transfer_one_message(struct spi_master *master, goto out; } + flush_fifo(sdd); + if (xfer->delay_usecs) udelay(xfer->delay_usecs); @@ -972,8 +974,6 @@ static int s3c64xx_spi_transfer_one_message(struct spi_master *master, } msg->actual_length += xfer->len; - - flush_fifo(sdd); } out: