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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 80D7AC432C0 for ; Wed, 27 Nov 2019 20:35:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4E1A52154A for ; Wed, 27 Nov 2019 20:35:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574886914; bh=+MSac9lGQ3g4tukeHIJJKFOOP18cM1X5Kz249xwJKOY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tl3gWQuEgtuxT+Ivng1CJAYySzfxLkUYw4LiUbrCA3MmLoqzAc1X2F23xDfumgxSf v1OsJP76TynDvMrdTthIeZkZzxREgJEDoWQlo1YTwdGhyRZgfC4pWFrn703bQDoDw/ tPOBNvB+I20Z3Wfnxgm4DghgBigWwtAQm7wBXEHE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727807AbfK0UfN (ORCPT ); Wed, 27 Nov 2019 15:35:13 -0500 Received: from mail.kernel.org ([198.145.29.99]:36112 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727811AbfK0UfL (ORCPT ); Wed, 27 Nov 2019 15:35:11 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 61D6B20866; Wed, 27 Nov 2019 20:35:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574886910; bh=+MSac9lGQ3g4tukeHIJJKFOOP18cM1X5Kz249xwJKOY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WldEKw8zaoPXkHjx0kJTISrVZUIq/WFGeQJVh4NR9k/ArSmIBcFUvqCDhqtKs18CR mNesDTnScU8j6KI3sxsmzhkL/UoAnEqqBXeELgj20wA1iYBl78+JcBaqrly3gs40hl vizlU7x6dpKL3o8GtvSDvUhEPanT51D/CdRDa7hA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christoph Hellwig , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.4 041/132] scsi: dc395x: fix DMA API usage in sg_update_list Date: Wed, 27 Nov 2019 21:30:32 +0100 Message-Id: <20191127202937.528722876@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191127202857.270233486@linuxfoundation.org> References: <20191127202857.270233486@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Christoph Hellwig [ Upstream commit 6c404a68bf83b4135a8a9aa1c388ebdf98e8ba7f ] We need to transfer device ownership to the CPU before we can manipulate the mapped data. Signed-off-by: Christoph Hellwig Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/dc395x.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c index 9da0ac360848f..830b2d2dcf206 100644 --- a/drivers/scsi/dc395x.c +++ b/drivers/scsi/dc395x.c @@ -1972,6 +1972,11 @@ static void sg_update_list(struct ScsiReqBlk *srb, u32 left) xferred -= psge->length; } else { /* Partial SG entry done */ + pci_dma_sync_single_for_cpu(srb->dcb-> + acb->dev, + srb->sg_bus_addr, + SEGMENTX_LEN, + PCI_DMA_TODEVICE); psge->length -= xferred; psge->address += xferred; srb->sg_index = idx; -- 2.20.1