--- linux-2.6.32.10.orig/drivers/net/bcm63xx_enet.c	2010-04-06 19:25:52.612158288 +0100
+++ linux-2.6.32.10/drivers/net/bcm63xx_enet.c	2010-04-07 21:40:26.991801424 +0100
@@ -965,7 +965,9 @@
 	/* all set, enable mac and interrupts, start dma engine and
 	 * kick rx dma channel */
 	wmb();
-	enet_writel(priv, ENET_CTL_ENABLE_MASK, ENET_CTL_REG);
+	val = enet_readl(priv, ENET_CTL_REG);
+	val |= ENET_CTL_ENABLE_MASK;
+	enet_writel(priv, val, ENET_CTL_REG);
 	enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG);
 	enet_dma_writel(priv, ENETDMA_CHANCFG_EN_MASK,
 			ENETDMA_CHANCFG_REG(priv->rx_chan));
