From patchwork Fri Jun 16 18:10:18 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 9793159 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7E64B60325 for ; Fri, 16 Jun 2017 18:28:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 78AE428670 for ; Fri, 16 Jun 2017 18:28:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 62C9C2866B; Fri, 16 Jun 2017 18:28:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E262C2866B for ; Fri, 16 Jun 2017 18:28:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752432AbdFPS2A (ORCPT ); Fri, 16 Jun 2017 14:28:00 -0400 Received: from bombadil.infradead.org ([65.50.211.133]:40347 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752134AbdFPSLb (ORCPT ); Fri, 16 Jun 2017 14:11:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=J9B8nb9ryCo3gFpIBh6ltIBht0kECTT+6WcsTWMkQXo=; b=qSAkKvcI5kKh7Jd3r7dPXfCwv ja/Z1NADONWJ0NqnQJ3izKcCGUKqgrkjOsP++NqIgiwmaqm8pnV6Ze0Oidq7DM6bomvXU61FdqApC IdaG7OskkavEOSOmYKc+e+W/Z5Y1RG1HNzCJkbJ6jh8hpWkF70XxNe1gbFf9APVzf3DUpxzAAa+qm dU8Zgq5XuC3aeLkzYLzlLSOCoLqzF81zv+JaH/93gsHpJop5TXlPeWGklinDqHKHeGrJFmvJ7irC9 qPLsveYhO8aSd13+PNdFphqQOHlrrfoc+OAXeO/q1u72hbAFixze4zQlD2bp/PRIl3cudlkOCM7R0 3pn5XWRqQ==; Received: from clnet-p099-196.ikbnet.co.at ([83.175.99.196] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.87 #1 (Red Hat Linux)) id 1dLviI-0004HL-NH; Fri, 16 Jun 2017 18:11:19 +0000 From: Christoph Hellwig To: x86@kernel.org, linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-c6x-dev@linux-c6x.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@linux-mips.org, openrisc@lists.librecores.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH 03/44] dmaengine: ioat: don't use DMA_ERROR_CODE Date: Fri, 16 Jun 2017 20:10:18 +0200 Message-Id: <20170616181059.19206-4-hch@lst.de> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170616181059.19206-1-hch@lst.de> References: <20170616181059.19206-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP DMA_ERROR_CODE is not a public API and will go away. Instead properly unwind based on the loop counter. Signed-off-by: Christoph Hellwig Acked-by: Dave Jiang Acked-By: Vinod Koul --- drivers/dma/ioat/init.c | 24 +++++++----------------- 1 file changed, 7 insertions(+), 17 deletions(-) diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index 6ad4384b3fa8..ed8ed1192775 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -839,8 +839,6 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) goto free_resources; } - for (i = 0; i < IOAT_NUM_SRC_TEST; i++) - dma_srcs[i] = DMA_ERROR_CODE; for (i = 0; i < IOAT_NUM_SRC_TEST; i++) { dma_srcs[i] = dma_map_page(dev, xor_srcs[i], 0, PAGE_SIZE, DMA_TO_DEVICE); @@ -910,8 +908,6 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) xor_val_result = 1; - for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) - dma_srcs[i] = DMA_ERROR_CODE; for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) { dma_srcs[i] = dma_map_page(dev, xor_val_srcs[i], 0, PAGE_SIZE, DMA_TO_DEVICE); @@ -965,8 +961,6 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) op = IOAT_OP_XOR_VAL; xor_val_result = 0; - for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) - dma_srcs[i] = DMA_ERROR_CODE; for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) { dma_srcs[i] = dma_map_page(dev, xor_val_srcs[i], 0, PAGE_SIZE, DMA_TO_DEVICE); @@ -1017,18 +1011,14 @@ static int ioat_xor_val_self_test(struct ioatdma_device *ioat_dma) goto free_resources; dma_unmap: if (op == IOAT_OP_XOR) { - if (dest_dma != DMA_ERROR_CODE) - dma_unmap_page(dev, dest_dma, PAGE_SIZE, - DMA_FROM_DEVICE); - for (i = 0; i < IOAT_NUM_SRC_TEST; i++) - if (dma_srcs[i] != DMA_ERROR_CODE) - dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, - DMA_TO_DEVICE); + while (--i >= 0) + dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, + DMA_TO_DEVICE); + dma_unmap_page(dev, dest_dma, PAGE_SIZE, DMA_FROM_DEVICE); } else if (op == IOAT_OP_XOR_VAL) { - for (i = 0; i < IOAT_NUM_SRC_TEST + 1; i++) - if (dma_srcs[i] != DMA_ERROR_CODE) - dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, - DMA_TO_DEVICE); + while (--i >= 0) + dma_unmap_page(dev, dma_srcs[i], PAGE_SIZE, + DMA_TO_DEVICE); } free_resources: dma->device_free_chan_resources(dma_chan);