From patchwork Sat Aug 21 12:49:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jon Lin X-Patchwork-Id: 12450925 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 22C32C4338F for ; Sat, 21 Aug 2021 12:49:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0B6B61242 for ; Sat, 21 Aug 2021 12:49:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230189AbhHUMu1 (ORCPT ); Sat, 21 Aug 2021 08:50:27 -0400 Received: from lucky1.263xmail.com ([211.157.147.130]:34844 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229722AbhHUMu1 (ORCPT ); Sat, 21 Aug 2021 08:50:27 -0400 Received: from localhost (unknown [192.168.167.16]) by lucky1.263xmail.com (Postfix) with ESMTP id C3B4BD772A; Sat, 21 Aug 2021 20:49:43 +0800 (CST) X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-ADDR-CHECKED4: 1 X-ANTISPAM-LEVEL: 2 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (postfix) whith ESMTP id P704T139881080669952S1629550173496538_; Sat, 21 Aug 2021 20:49:34 +0800 (CST) X-IP-DOMAINF: 1 X-UNIQUE-TAG: X-RL-SENDER: jon.lin@rock-chips.com X-SENDER: jon.lin@rock-chips.com X-LOGIN-NAME: jon.lin@rock-chips.com X-FST-TO: heiko@sntech.de X-RCPT-COUNT: 7 X-SENDER-IP: 58.22.7.114 X-ATTACHMENT-NUM: 0 X-System-Flag: 0 From: Jon Lin To: Heiko Stuebner Cc: Jon Lin , Mark Brown , linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH] spi: rockchip-sfc: Remove redundant IO operations Date: Sat, 21 Aug 2021 20:49:25 +0800 Message-Id: <20210821124925.6066-1-jon.lin@rock-chips.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Coherent dma buffer is uncached and memcpy is enough. Signed-off-by: Jon Lin --- drivers/spi/spi-rockchip-sfc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-rockchip-sfc.c b/drivers/spi/spi-rockchip-sfc.c index 7c4d47fe80c2..81154a8836fc 100644 --- a/drivers/spi/spi-rockchip-sfc.c +++ b/drivers/spi/spi-rockchip-sfc.c @@ -453,7 +453,7 @@ static int rockchip_sfc_xfer_data_dma(struct rockchip_sfc *sfc, dev_dbg(sfc->dev, "sfc xfer_dma len=%x\n", len); if (op->data.dir == SPI_MEM_DATA_OUT) - memcpy_toio(sfc->buffer, op->data.buf.out, len); + memcpy(sfc->buffer, op->data.buf.out, len); ret = rockchip_sfc_fifo_transfer_dma(sfc, sfc->dma_buffer, len); if (!wait_for_completion_timeout(&sfc->cp, msecs_to_jiffies(2000))) { @@ -462,7 +462,7 @@ static int rockchip_sfc_xfer_data_dma(struct rockchip_sfc *sfc, } rockchip_sfc_irq_mask(sfc, SFC_IMR_DMA); if (op->data.dir == SPI_MEM_DATA_IN) - memcpy_fromio(op->data.buf.in, sfc->buffer, len); + memcpy(op->data.buf.in, sfc->buffer, len); return ret; }