From patchwork Tue Sep 15 15:51:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11777915 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 23992618 for ; Tue, 15 Sep 2020 22:17:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0611120936 for ; Tue, 15 Sep 2020 22:17:43 +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="n3p/yVJZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727860AbgIOWQ6 (ORCPT ); Tue, 15 Sep 2020 18:16:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53688 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727701AbgIOQdY (ORCPT ); Tue, 15 Sep 2020 12:33:24 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C8C3DC06178A; Tue, 15 Sep 2020 09:33:22 -0700 (PDT) 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=n3p/yVJZRK+wbxyYEp8pkVnF7d hOOHcYTdFzo7akNyeet0DZXxccLdgZIoOr6taxspBy/6Nw2HzuudIL5cO3cux/0Ps1kPOPpCaDuiZ 71xYegixSYfkkcrW3QjKCgmzELBA6x8wDtzWuiR4saDycE2AC35+V5oi4+daZIEjq2ToSWnv4R9cJ boT1A66ZJ9G2igo0eQXvpTU9Ka7B0HiUCVukCMermJx4dV3Bpp33w8WLP0t3lZ8ajE4VQW97wGslQ 7cj3CUwUESH+xL2nh4b2897z9ZoRIetEyG0yjYlRcvvUAz2cF1ga1smN8Gnx/99jq8B/YKpwQ7hY/ 2LJFzrkw==; 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 1kIDt1-0006DO-8d; Tue, 15 Sep 2020 16:32:55 +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 18/18] firewire-ohci: use dma_alloc_pages Date: Tue, 15 Sep 2020 17:51:22 +0200 Message-Id: <20200915155122.1768241-19-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200915155122.1768241-1-hch@lst.de> References: <20200915155122.1768241-1-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 Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org 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) static void ar_context_release(struct ar_context *ctx) { + struct device *dev = ctx->ohci->card.device; unsigned int i; vunmap(ctx->buffer); - for (i = 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 = 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); + } } static void ar_context_abort(struct ar_context *ctx, const char *error_msg) @@ -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 = 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); for (i = 0; i < AR_BUFFERS; i++) { - ctx->pages[i] = alloc_page(GFP_KERNEL | GFP_DMA32); + ctx->pages[i] = dma_alloc_pages(dev, PAGE_SIZE, &dma_addr, + DMA_FROM_DEVICE, GFP_KERNEL); if (!ctx->pages[i]) goto out_of_memory; - dma_addr = 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] = 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); } for (i = 0; i < AR_BUFFERS; i++)