netdev - [PATCH 6/8] gianfar: Factor out RX BDs initialization from gfar_new

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Message-ID: <20091012160037.GF2463@oksana.dev.rtsoft.ru>
Date:	Mon, 12 Oct 2009 20:00:37 +0400
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	David Miller <davem@...emloft.net>
Cc:	Andy Fleming <afleming@...escale.com>,
	Dai Haruki <dai.haruki@...escale.com>,
	Scott Wood <scottwood@...escale.com>, linuxppc-dev@...abs.org,
	netdev@...r.kernel.org
Subject: [PATCH 6/8] gianfar: Factor out RX BDs initialization from
 gfar_new_rxbdp()

We want to just reinitialize RX BDs after hibernation, no need to
map the skb->data again. So let's factor gfar_init_rxbdp() out of
gfar_new_rxbdp().

Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
---
 drivers/net/gianfar.c |   33 +++++++++++++++++++++------------
 1 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 46b0b37..1b32274 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -147,6 +147,23 @@ MODULE_AUTHOR("Freescale Semiconductor, Inc");
 MODULE_DESCRIPTION("Gianfar Ethernet Driver");
 MODULE_LICENSE("GPL");
 
+static void gfar_init_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
+			    dma_addr_t buf)
+{
+	struct gfar_private *priv = netdev_priv(dev);
+	u32 lstatus;
+
+	bdp->bufPtr = buf;
+
+	lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
+	if (bdp == priv->rx_bd_base + priv->rx_ring_size - 1)
+		lstatus |= BD_LFLAG(RXBD_WRAP);
+
+	eieio();
+
+	bdp->lstatus = lstatus;
+}
+
 static int gfar_alloc_skb_resources(struct net_device *ndev)
 {
 	struct txbd8 *txbdp;
@@ -1676,19 +1693,11 @@ static void gfar_new_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
 		struct sk_buff *skb)
 {
 	struct gfar_private *priv = netdev_priv(dev);
-	u32 lstatus;
-
-	bdp->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data,
-			priv->rx_buffer_size, DMA_FROM_DEVICE);
-
-	lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
+	dma_addr_t buf;
 
-	if (bdp == priv->rx_bd_base + priv->rx_ring_size - 1)
-		lstatus |= BD_LFLAG(RXBD_WRAP);
-
-	eieio();
-
-	bdp->lstatus = lstatus;
+	buf = dma_map_single(&priv->ofdev->dev, skb->data,
+			     priv->rx_buffer_size, DMA_FROM_DEVICE);
+	gfar_init_rxbdp(dev, bdp, buf);
 }
 
 
-- 
1.6.3.3

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