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=-12.8 required=3.0 tests=BAYES_00,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 E2E66C43461 for ; Fri, 11 Sep 2020 17:22:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8FA0F221E7 for ; Fri, 11 Sep 2020 17:22:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599844925; bh=4Vv2RDw7nKUlCzjSveipl9l0b2eKWH3UxDWSeO7rktA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=AVM1A70G83Ga8B+RAEmnwlclWVsSg7jJjOLOQd66/sAF+7Udic2tc0ALtJbpdA8LR tw0ngHrWu1J5NXkCGYp6gh29mwgPKkCpfAs3FJbEmidtIw7+WVX0cncDgY9YhOWLni yFfWqb5RYONHHeAHWKyeaHQE5PaAJ7KxudmA84LA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726398AbgIKRV7 (ORCPT ); Fri, 11 Sep 2020 13:21:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:49870 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726132AbgIKNAL (ORCPT ); Fri, 11 Sep 2020 09:00:11 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 09FEB22272; Fri, 11 Sep 2020 12:56:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599828986; bh=4Vv2RDw7nKUlCzjSveipl9l0b2eKWH3UxDWSeO7rktA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AcLGz/D/E3donIIIn5JrUKp/rN2RukJcEAOiSHFwvXyI+LsYTMo2UT3HTKwiwuWRO W0pCiGBNtLHZn30jIF/chlRWo+2j29dobSfqYESuq6CkpFfqm9FHpGYx0kJ4qVbRV3 2Faw38BsiHv1tsSEuETBXVBiXHn4EM+c9x5GB6Xo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, kernel test robot , Marek Szyprowski , Vinod Koul , Sasha Levin Subject: [PATCH 4.9 21/71] dmaengine: pl330: Fix burst length if burst size is smaller than bus width Date: Fri, 11 Sep 2020 14:46:05 +0200 Message-Id: <20200911122505.999081976@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200911122504.928931589@linuxfoundation.org> References: <20200911122504.928931589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Marek Szyprowski [ Upstream commit 0661cef675d37e2c4b66a996389ebeae8568e49e ] Move the burst len fixup after setting the generic value for it. This finally enables the fixup introduced by commit 137bd11090d8 ("dmaengine: pl330: Align DMA memcpy operations to MFIFO width"), which otherwise was overwritten by the generic value. Reported-by: kernel test robot Fixes: 137bd11090d8 ("dmaengine: pl330: Align DMA memcpy operations to MFIFO width") Signed-off-by: Marek Szyprowski Link: https://lore.kernel.org/r/20200825064617.16193-1-m.szyprowski@samsung.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/pl330.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 57b375d0de292..16c08846ea0e1 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2677,6 +2677,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, while (burst != (1 << desc->rqcfg.brst_size)) desc->rqcfg.brst_size++; + desc->rqcfg.brst_len = get_burst_len(desc, len); /* * If burst size is smaller than bus width then make sure we only * transfer one at a time to avoid a burst stradling an MFIFO entry. @@ -2684,7 +2685,6 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, if (desc->rqcfg.brst_size * 8 < pl330->pcfg.data_bus_width) desc->rqcfg.brst_len = 1; - desc->rqcfg.brst_len = get_burst_len(desc, len); desc->bytes_requested = len; desc->txd.flags = flags; -- 2.25.1