From patchwork Thu Jun 2 09:38:13 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 98358 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 50376B6F9C for ; Thu, 2 Jun 2011 19:40:41 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933045Ab1FBJke (ORCPT ); Thu, 2 Jun 2011 05:40:34 -0400 Received: from mail-ew0-f46.google.com ([209.85.215.46]:32967 "EHLO mail-ew0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932771Ab1FBJkd (ORCPT ); Thu, 2 Jun 2011 05:40:33 -0400 Received: by ewy4 with SMTP id 4so216035ewy.19 for ; Thu, 02 Jun 2011 02:40:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:sender:from:to:cc:subject:date:message-id :x-mailer; bh=PItHdyAJ/QaBAVO2klx4444M5riXaWFCRXbukazubRE=; b=h5ozNSRG+6a7NlxuwwKjQ3zYFVAZG3vHVV4UxjVA6IQpbgfrt6lBLRkZw/c0f79Duz oh8bxtdzzSV1f8craKIsNHiDwoAoAdHP/ySZDtOnqXiPsDXYItr/jXQkS9GM6vlgiJ+t 4TdeWOC68WN085pjGOkTu3OgjndseG4VLfjL0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:from:to:cc:subject:date:message-id:x-mailer; b=s/Z60r2yvf2uTuFsjrDCR+qSLifd6QlJlvJriA6nGBvq74s8+GNCvfkjaNzHkS3DGE 8BjT5U3+1f6fnW4pFCVWqzCtiRZ3CF8GlHKYWHea7/9JciIeK6CaI2Lgbzy4vw910gYq KOhYhJrKSuh8asVtd5kVuO+QZgzz2wE+4tKCo= Received: by 10.14.35.163 with SMTP id u35mr197888eea.137.1307007631528; Thu, 02 Jun 2011 02:40:31 -0700 (PDT) Received: from acer.healthdatacare.com (a88-115-37-157.elisa-laajakaista.fi [88.115.37.157]) by mx.google.com with ESMTPS id y6sm282499eem.4.2011.06.02.02.40.29 (version=SSLv3 cipher=OTHER); Thu, 02 Jun 2011 02:40:30 -0700 (PDT) From: Mika Westerberg To: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, kernel@wantstofly.org, hsweeten@visionengravers.com, ryan@bluewatersys.com, Mika Westerberg Subject: [PATCH 1/5] net: ep93xx_eth: pass struct device to DMA API functions Date: Thu, 2 Jun 2011 12:38:13 +0300 Message-Id: <89df467f9811b4f869513de3ada90ce7de74c6d1.1307006502.git.mika.westerberg@iki.fi> X-Mailer: git-send-email 1.7.4.4 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org We shouldn't use NULL for any DMA API functions, unless we are dealing with ISA or EISA device. So pass correct struct dev pointer to these functions. Signed-off-by: Mika Westerberg Acked-by: Russell King --- drivers/net/arm/ep93xx_eth.c | 26 ++++++++++++++++---------- 1 files changed, 16 insertions(+), 10 deletions(-) diff --git a/drivers/net/arm/ep93xx_eth.c b/drivers/net/arm/ep93xx_eth.c index 5a77001..8779d3b 100644 --- a/drivers/net/arm/ep93xx_eth.c +++ b/drivers/net/arm/ep93xx_eth.c @@ -159,6 +159,8 @@ struct ep93xx_priv void __iomem *base_addr; int irq; + struct device *dma_dev; + struct ep93xx_descs *descs; dma_addr_t descs_dma_addr; @@ -284,7 +286,8 @@ static int ep93xx_rx(struct net_device *dev, int processed, int budget) skb = dev_alloc_skb(length + 2); if (likely(skb != NULL)) { skb_reserve(skb, 2); - dma_sync_single_for_cpu(NULL, ep->descs->rdesc[entry].buf_addr, + dma_sync_single_for_cpu(ep->dma_dev, + ep->descs->rdesc[entry].buf_addr, length, DMA_FROM_DEVICE); skb_copy_to_linear_data(skb, ep->rx_buf[entry], length); skb_put(skb, length); @@ -362,7 +365,7 @@ static int ep93xx_xmit(struct sk_buff *skb, struct net_device *dev) ep->descs->tdesc[entry].tdesc1 = TDESC1_EOF | (entry << 16) | (skb->len & 0xfff); skb_copy_and_csum_dev(skb, ep->tx_buf[entry]); - dma_sync_single_for_cpu(NULL, ep->descs->tdesc[entry].buf_addr, + dma_sync_single_for_cpu(ep->dma_dev, ep->descs->tdesc[entry].buf_addr, skb->len, DMA_TO_DEVICE); dev_kfree_skb(skb); @@ -457,6 +460,7 @@ static irqreturn_t ep93xx_irq(int irq, void *dev_id) static void ep93xx_free_buffers(struct ep93xx_priv *ep) { + struct device *dev = ep->dma_dev; int i; for (i = 0; i < RX_QUEUE_ENTRIES; i += 2) { @@ -464,7 +468,7 @@ static void ep93xx_free_buffers(struct ep93xx_priv *ep) d = ep->descs->rdesc[i].buf_addr; if (d) - dma_unmap_single(NULL, d, PAGE_SIZE, DMA_FROM_DEVICE); + dma_unmap_single(dev, d, PAGE_SIZE, DMA_FROM_DEVICE); if (ep->rx_buf[i] != NULL) free_page((unsigned long)ep->rx_buf[i]); @@ -475,13 +479,13 @@ static void ep93xx_free_buffers(struct ep93xx_priv *ep) d = ep->descs->tdesc[i].buf_addr; if (d) - dma_unmap_single(NULL, d, PAGE_SIZE, DMA_TO_DEVICE); + dma_unmap_single(dev, d, PAGE_SIZE, DMA_TO_DEVICE); if (ep->tx_buf[i] != NULL) free_page((unsigned long)ep->tx_buf[i]); } - dma_free_coherent(NULL, sizeof(struct ep93xx_descs), ep->descs, + dma_free_coherent(dev, sizeof(struct ep93xx_descs), ep->descs, ep->descs_dma_addr); } @@ -491,9 +495,10 @@ static void ep93xx_free_buffers(struct ep93xx_priv *ep) */ static int ep93xx_alloc_buffers(struct ep93xx_priv *ep) { + struct device *dev = ep->dma_dev; int i; - ep->descs = dma_alloc_coherent(NULL, sizeof(struct ep93xx_descs), + ep->descs = dma_alloc_coherent(dev, sizeof(struct ep93xx_descs), &ep->descs_dma_addr, GFP_KERNEL | GFP_DMA); if (ep->descs == NULL) return 1; @@ -506,8 +511,8 @@ static int ep93xx_alloc_buffers(struct ep93xx_priv *ep) if (page == NULL) goto err; - d = dma_map_single(NULL, page, PAGE_SIZE, DMA_FROM_DEVICE); - if (dma_mapping_error(NULL, d)) { + d = dma_map_single(dev, page, PAGE_SIZE, DMA_FROM_DEVICE); + if (dma_mapping_error(dev, d)) { free_page((unsigned long)page); goto err; } @@ -529,8 +534,8 @@ static int ep93xx_alloc_buffers(struct ep93xx_priv *ep) if (page == NULL) goto err; - d = dma_map_single(NULL, page, PAGE_SIZE, DMA_TO_DEVICE); - if (dma_mapping_error(NULL, d)) { + d = dma_map_single(dev, page, PAGE_SIZE, DMA_TO_DEVICE); + if (dma_mapping_error(dev, d)) { free_page((unsigned long)page); goto err; } @@ -829,6 +834,7 @@ static int ep93xx_eth_probe(struct platform_device *pdev) } ep = netdev_priv(dev); ep->dev = dev; + ep->dma_dev = &pdev->dev; netif_napi_add(dev, &ep->napi, ep93xx_poll, 64); platform_set_drvdata(pdev, dev);