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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 63134C2BC11 for ; Mon, 14 Sep 2020 15:24:34 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D05F820639 for ; Mon, 14 Sep 2020 15:24:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="U0IBgU2Q" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D05F820639 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 4DA5E900006; Mon, 14 Sep 2020 11:24:33 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 489A9900003; Mon, 14 Sep 2020 11:24:33 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 37AB3900006; Mon, 14 Sep 2020 11:24:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0168.hostedemail.com [216.40.44.168]) by kanga.kvack.org (Postfix) with ESMTP id 1D6F6900003 for ; Mon, 14 Sep 2020 11:24:33 -0400 (EDT) Received: from smtpin09.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id C16D4180AD81F for ; Mon, 14 Sep 2020 15:24:32 +0000 (UTC) X-FDA: 77262038784.09.page65_301800a27109 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin09.hostedemail.com (Postfix) with ESMTP id 824A0180AD807 for ; Mon, 14 Sep 2020 15:24:32 +0000 (UTC) X-HE-Tag: page65_301800a27109 X-Filterd-Recvd-Size: 4926 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf43.hostedemail.com (Postfix) with ESMTP for ; Mon, 14 Sep 2020 15:24:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=3uuWATlux5CLwoYUg+NN5gOtHb6T7EXPohKT/lTJKJI=; b=U0IBgU2QceYv7cYz0f441RijWy jX6Uz56bUrKfzqiHUqW4Am8nd+6lVMXE3/VPeI6Dyctys5vWsqG7p9TZjmsaB4shTobADfofWCt2s 1s3TKwLjbf+g5qtDtSLFgL8DmFzhOuChm2RFQ+dWaxRQVaecIXZU24GAOneelMTCvJ13zxrzITOvg ExNdpySucaD8C2anmkAXbMOJB2da5zC7FBZvWjUSKNpv1i+Go/vuMfGDKG5gApZgbramlUxDAnvlC 0pbLEfVZA10XQ/7JqJFE/O3mSpo7OqirHTyfcD2gC9N8uRPiSLShe9jiyo8nmIV8jkTp7pR6eEG4A UuqWKTxw==; Received: from 089144214092.atnat0023.highway.a1.net ([89.144.214.92] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kHqKm-0004Mq-MA; Mon, 14 Sep 2020 15:24:01 +0000 From: Christoph Hellwig To: Mauro Carvalho Chehab , Thomas Bogendoerfer , "James E.J. Bottomley" , Joonyoung Shim , Seung-Woo Kim , Ben Skeggs , Marek Szyprowski , Tomasz Figa , Matt Porter , iommu@lists.linux-foundation.org Cc: Stefan Richter , linux1394-devel@lists.sourceforge.net, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, netdev@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org Subject: [PATCH 17/17] firewire-ohci: use dma_alloc_pages Date: Mon, 14 Sep 2020 16:44:33 +0200 Message-Id: <20200914144433.1622958-18-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200914144433.1622958-1-hch@lst.de> References: <20200914144433.1622958-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Queue-Id: 824A0180AD807 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Use dma_alloc_pages to allocate DMAable pages instead of hoping that the architecture either has GFP_DMA32 or not more than 4G of memory. Signed-off-by: Christoph Hellwig --- drivers/firewire/ohci.c | 26 +++++++++++--------------- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 020cb15a4d8fcc..9811c40956e54d 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -674,17 +674,16 @@ static void ar_context_link_page(struct ar_context = *ctx, unsigned int index) =20 static void ar_context_release(struct ar_context *ctx) { + struct device *dev =3D ctx->ohci->card.device; unsigned int i; =20 vunmap(ctx->buffer); =20 - for (i =3D 0; i < AR_BUFFERS; i++) - if (ctx->pages[i]) { - dma_unmap_page(ctx->ohci->card.device, - ar_buffer_bus(ctx, i), - PAGE_SIZE, DMA_FROM_DEVICE); - __free_page(ctx->pages[i]); - } + for (i =3D 0; i < AR_BUFFERS; i++) { + if (ctx->pages[i]) + dma_free_pages(dev, PAGE_SIZE, ctx->pages[i], + ar_buffer_bus(ctx, i), DMA_FROM_DEVICE); + } } =20 static void ar_context_abort(struct ar_context *ctx, const char *error_m= sg) @@ -970,6 +969,7 @@ static void ar_context_tasklet(unsigned long data) static int ar_context_init(struct ar_context *ctx, struct fw_ohci *ohci, unsigned int descriptors_offset, u32 regs) { + struct device *dev =3D ohci->card.device; unsigned int i; dma_addr_t dma_addr; struct page *pages[AR_BUFFERS + AR_WRAPAROUND_PAGES]; @@ -980,17 +980,13 @@ static int ar_context_init(struct ar_context *ctx, = struct fw_ohci *ohci, tasklet_init(&ctx->tasklet, ar_context_tasklet, (unsigned long)ctx); =20 for (i =3D 0; i < AR_BUFFERS; i++) { - ctx->pages[i] =3D alloc_page(GFP_KERNEL | GFP_DMA32); + ctx->pages[i] =3D dma_alloc_pages(dev, PAGE_SIZE, &dma_addr, + DMA_FROM_DEVICE, GFP_KERNEL); if (!ctx->pages[i]) goto out_of_memory; - dma_addr =3D dma_map_page(ohci->card.device, ctx->pages[i], - 0, PAGE_SIZE, DMA_FROM_DEVICE); - if (dma_mapping_error(ohci->card.device, dma_addr)) { - __free_page(ctx->pages[i]); - ctx->pages[i] =3D NULL; - goto out_of_memory; - } set_page_private(ctx->pages[i], dma_addr); + dma_sync_single_for_device(dev, dma_addr, PAGE_SIZE, + DMA_FROM_DEVICE); } =20 for (i =3D 0; i < AR_BUFFERS; i++) --=20 2.28.0