From patchwork Wed Jan 28 12:23:49 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda Delgado X-Patchwork-Id: 5728051 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 012089F1C5 for ; Wed, 28 Jan 2015 12:27:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2353720259 for ; Wed, 28 Jan 2015 12:27:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5775C2025A for ; Wed, 28 Jan 2015 12:27:46 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YGRh1-0007R5-4X; Wed, 28 Jan 2015 12:25:59 +0000 Received: from mail-lb0-x235.google.com ([2a00:1450:4010:c04::235]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YGRfY-00055P-E6 for linux-arm-kernel@lists.infradead.org; Wed, 28 Jan 2015 12:24:29 +0000 Received: by mail-lb0-f181.google.com with SMTP id u10so18342725lbd.12 for ; Wed, 28 Jan 2015 04:24:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Dr/9MZPSGujKnoiVq6Yq3FQhqTYRw53ijTsr/8L3HgM=; b=qwrWcfIT8lDU/qnJJEVqWDEjrODVTZhc7dUdaAx20p8Zs46zW4L6zBwbgd9xzvV1MG XIAX8zAlLw5mpnLxd1yBog1oIz2hocMhLWboYwJZDya54In0ccf32f8OgyeZLHvuAP5q GuChaH7kKfHxwrC+jn5IX9P9eYQCX+QFR7prNSwAOjRUSsTaThwvt5HLFVj3umDN8VW3 EFaCMGknneBB1CdIjB5gEYdbau1wxb8hwOfL3rH5QhFf9qp/muktKA5vd9YbKtO7p2Gr KB2GR5vt8i9IDtobF+BtYy54SwrhzT0Q3XUr/nE/JcYkp5e1eEPNQmedqxiem9xxy6gx kabQ== X-Received: by 10.112.180.135 with SMTP id do7mr7455966lbc.23.1422447851011; Wed, 28 Jan 2015 04:24:11 -0800 (PST) Received: from neopili.qtec.com (cpe.xe-3-0-1-778.vbrnqe10.dk.customer.tdc.net. [80.197.57.18]) by mx.google.com with ESMTPSA id xh7sm1293741lbb.17.2015.01.28.04.24.09 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 28 Jan 2015 04:24:09 -0800 (PST) From: Ricardo Ribalda Delgado To: Mark Brown , Michal Simek , =?UTF-8?q?S=C3=B6ren=20Brinkmann?= , linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 10/15] spi/xilinx: Convert remainding_bytes in remaining words Date: Wed, 28 Jan 2015 13:23:49 +0100 Message-Id: <1422447834-23116-11-git-send-email-ricardo.ribalda@gmail.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1422447834-23116-1-git-send-email-ricardo.ribalda@gmail.com> References: <1422447834-23116-1-git-send-email-ricardo.ribalda@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150128_042428_684849_D5477DCC X-CRM114-Status: GOOD ( 12.91 ) X-Spam-Score: -0.8 (/) Cc: Ricardo Ribalda Delgado X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Simplify the code by using the unit used on most of the code logic. Signed-off-by: Ricardo Ribalda Delgado --- drivers/spi/spi-xilinx.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index 6ce1066..8ed306e 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -86,7 +86,7 @@ struct xilinx_spi { u8 *rx_ptr; /* pointer in the Tx buffer */ const u8 *tx_ptr; /* pointer in the Rx buffer */ - int remaining_bytes; /* the number of bytes left to transfer */ + int remaining_words; /* the number of words left to transfer */ u8 bits_per_word; int buffer_size; /* buffer size in words */ u32 cs_inactive; /* Level of the CS pins when inactive*/ @@ -231,7 +231,7 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi, static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi, int n_words) { - xspi->remaining_bytes -= n_words * xspi->bits_per_word / 8; + xspi->remaining_words -= n_words; while (n_words--) xilinx_spi_tx(xspi); @@ -246,15 +246,14 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) xspi->tx_ptr = t->tx_buf; xspi->rx_ptr = t->rx_buf; - xspi->remaining_bytes = t->len; + xspi->remaining_words = (t->len * 8) / xspi->bits_per_word; reinit_completion(&xspi->done); - while (xspi->remaining_bytes) { + while (xspi->remaining_words) { u16 cr = 0; int n_words; - n_words = (xspi->remaining_bytes * 8) / xspi->bits_per_word; - n_words = min(n_words, xspi->buffer_size); + n_words = min(xspi->remaining_words, xspi->buffer_size); xilinx_spi_fill_tx_fifo(xspi, n_words); @@ -286,7 +285,7 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) xilinx_spi_rx(xspi); } - return t->len - xspi->remaining_bytes; + return t->len; }