From patchwork Fri Feb 1 08:47:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 10792181 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ADE1E186E for ; Fri, 1 Feb 2019 08:49:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9E7AE31223 for ; Fri, 1 Feb 2019 08:49:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 92AF231B87; Fri, 1 Feb 2019 08:49:39 +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=-2.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E0F0631223 for ; Fri, 1 Feb 2019 08:49:38 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id A3C292679B3; Fri, 1 Feb 2019 09:48:41 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 6EA2E2679E8; Fri, 1 Feb 2019 09:48:39 +0100 (CET) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by alsa0.perex.cz (Postfix) with ESMTP id 5E9AB26799C for ; Fri, 1 Feb 2019 09:48:36 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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: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=pU0HGVd2mqMY96Sg+NjMcR2p0eV/+Kyy5J3jOlZeRfA=; b=DVnztnYQZKzoT+JeFlNalarZXc DKYysDp7mfma5POpYC66khqOTC3hwKqlH0UkhiF052GFkvIRXiHNM2wrhaUNP2F5l6juTEr+T7hrT hS//HLgdatiRar2k9vIXFDmlysobYx0LAk9qyxYNxKtZ1sg7/XYWyGUivFAgfk3GVts5fHyHwqwnf O82txf8uvAHAjz8jDyJDxiMjAMx0wL6clUmFBUlkWAJambBIMlVC1RSI2KD3j0nD05W3N1/FnPBWy G40VoJ1mRzh0wM5Ggb6UKzr6k+9LoXDeN8xpkDLqMry8GFJAilOiwyXJKCe6e0NFX8iNe8zcmafo/ 6ZOcrW1w==; Received: from 089144212163.atnat0021.highway.a1.net ([89.144.212.163] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1gpUUx-0001S8-UW; Fri, 01 Feb 2019 08:48:32 +0000 From: Christoph Hellwig To: John Crispin , Vinod Koul , Dmitry Tarnyagin , Nicolas Ferre , Sudip Mukherjee , Felipe Balbi , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, netdev@vger.kernel.org, linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org, alsa-devel@alsa-project.org Date: Fri, 1 Feb 2019 09:47:54 +0100 Message-Id: <20190201084801.10983-12-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190201084801.10983-1-hch@lst.de> References: <20190201084801.10983-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Cc: iommu@lists.linux-foundation.org Subject: [alsa-devel] [PATCH 11/18] parport_ip32: pass struct device to DMA API functions X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP The DMA API generally relies on a struct device to work properly, and only barely works without one for legacy reasons. Pass the easily available struct device from the platform_device to remedy this. Signed-off-by: Christoph Hellwig --- drivers/parport/parport_ip32.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/parport/parport_ip32.c b/drivers/parport/parport_ip32.c index 62873070f988..b7a892791c3e 100644 --- a/drivers/parport/parport_ip32.c +++ b/drivers/parport/parport_ip32.c @@ -568,6 +568,7 @@ static irqreturn_t parport_ip32_merr_interrupt(int irq, void *dev_id) /** * parport_ip32_dma_start - begins a DMA transfer + * @p: partport to work on * @dir: DMA direction: DMA_TO_DEVICE or DMA_FROM_DEVICE * @addr: pointer to data buffer * @count: buffer size @@ -575,8 +576,8 @@ static irqreturn_t parport_ip32_merr_interrupt(int irq, void *dev_id) * Calls to parport_ip32_dma_start() and parport_ip32_dma_stop() must be * correctly balanced. */ -static int parport_ip32_dma_start(enum dma_data_direction dir, - void *addr, size_t count) +static int parport_ip32_dma_start(struct parport *p, + enum dma_data_direction dir, void *addr, size_t count) { unsigned int limit; u64 ctrl; @@ -601,7 +602,7 @@ static int parport_ip32_dma_start(enum dma_data_direction dir, /* Prepare DMA pointers */ parport_ip32_dma.dir = dir; - parport_ip32_dma.buf = dma_map_single(NULL, addr, count, dir); + parport_ip32_dma.buf = dma_map_single(&p->bus_dev, addr, count, dir); parport_ip32_dma.len = count; parport_ip32_dma.next = parport_ip32_dma.buf; parport_ip32_dma.left = parport_ip32_dma.len; @@ -625,11 +626,12 @@ static int parport_ip32_dma_start(enum dma_data_direction dir, /** * parport_ip32_dma_stop - ends a running DMA transfer + * @p: partport to work on * * Calls to parport_ip32_dma_start() and parport_ip32_dma_stop() must be * correctly balanced. */ -static void parport_ip32_dma_stop(void) +static void parport_ip32_dma_stop(struct parport *p) { u64 ctx_a; u64 ctx_b; @@ -685,8 +687,8 @@ static void parport_ip32_dma_stop(void) enable_irq(MACEISA_PAR_CTXB_IRQ); parport_ip32_dma.irq_on = 1; - dma_unmap_single(NULL, parport_ip32_dma.buf, parport_ip32_dma.len, - parport_ip32_dma.dir); + dma_unmap_single(&p->bus_dev, parport_ip32_dma.buf, + parport_ip32_dma.len, parport_ip32_dma.dir); } /** @@ -1445,7 +1447,7 @@ static size_t parport_ip32_fifo_write_block_dma(struct parport *p, priv->irq_mode = PARPORT_IP32_IRQ_HERE; - parport_ip32_dma_start(DMA_TO_DEVICE, (void *)buf, len); + parport_ip32_dma_start(p, DMA_TO_DEVICE, (void *)buf, len); reinit_completion(&priv->irq_complete); parport_ip32_frob_econtrol(p, ECR_DMAEN | ECR_SERVINTR, ECR_DMAEN); @@ -1461,7 +1463,7 @@ static size_t parport_ip32_fifo_write_block_dma(struct parport *p, if (ecr & ECR_SERVINTR) break; /* DMA transfer just finished */ } - parport_ip32_dma_stop(); + parport_ip32_dma_stop(p); written = len - parport_ip32_dma_get_residue(); priv->irq_mode = PARPORT_IP32_IRQ_FWD;