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,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 B338AC35242 for ; Fri, 24 Jan 2020 11:25:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F3E12467F for ; Fri, 24 Jan 2020 11:25:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579865142; bh=+77K14ECIlkV3RCpNUoUbilC4954ZCapLwATGAOgHOI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FtGUSjw/2HSxG0SRI1MS/Cvqfc1cmacdVGAhk+N2o70FdKCkzZ940OVKQ7kCJopnJ LeI3QlDr2ek/Hn/zRI6Bwei4klyF4rnZ71U8llHCCBY8Wiv+5JNVsDQGSYsTkxACWh QcsJACzQAyhExS4yPdXMdZJVMUsV3tNgMFpA63fM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391520AbgAXLZk (ORCPT ); Fri, 24 Jan 2020 06:25:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:39850 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391517AbgAXLZj (ORCPT ); Fri, 24 Jan 2020 06:25:39 -0500 Received: from localhost (ip-213-127-102-57.ip.prioritytelecom.net [213.127.102.57]) (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 568F12077C; Fri, 24 Jan 2020 11:25:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579865138; bh=+77K14ECIlkV3RCpNUoUbilC4954ZCapLwATGAOgHOI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NpVX2PM7EqJL9c0mP+u0tt08lINpfCkRLm2A9mT93nKY3YFaeRvvzdHKiAmufXXMH o42xOOh8Em7Bag/E2l2G+oXhsG0IWFuaWLWgbghsOCY4ZeyVB6lT9ygsixMmcemD98 hamuvC2TwZizA2sMQCMy7LwlymFC7xl0qYJ+ZFXg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andy Shevchenko , Vinod Koul , Sasha Levin Subject: [PATCH 4.19 448/639] dmaengine: hsu: Revert "set HSU_CH_MTSR to memory width" Date: Fri, 24 Jan 2020 10:30:18 +0100 Message-Id: <20200124093143.120393139@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200124093047.008739095@linuxfoundation.org> References: <20200124093047.008739095@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: Andy Shevchenko [ Upstream commit c24a5c735f87d0549060de31367c095e8810b895 ] The commit 080edf75d337 ("dmaengine: hsu: set HSU_CH_MTSR to memory width") has been mistakenly submitted. The further investigations show that the original code does better job since the memory side transfer size has never been configured by DMA users. As per latest revision of documentation: "Channel minimum transfer size (CHnMTSR)... For IOSF UART, maximum value that can be programmed is 64 and minimum value that can be programmed is 1." This reverts commit 080edf75d337d35faa6fc3df99342b10d2848d16. Fixes: 080edf75d337 ("dmaengine: hsu: set HSU_CH_MTSR to memory width") Signed-off-by: Andy Shevchenko Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/hsu/hsu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c index 202ffa9f7611c..18f155a974db6 100644 --- a/drivers/dma/hsu/hsu.c +++ b/drivers/dma/hsu/hsu.c @@ -64,10 +64,10 @@ static void hsu_dma_chan_start(struct hsu_dma_chan *hsuc) if (hsuc->direction == DMA_MEM_TO_DEV) { bsr = config->dst_maxburst; - mtsr = config->src_addr_width; + mtsr = config->dst_addr_width; } else if (hsuc->direction == DMA_DEV_TO_MEM) { bsr = config->src_maxburst; - mtsr = config->dst_addr_width; + mtsr = config->src_addr_width; } hsu_chan_disable(hsuc); -- 2.20.1