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path: root/target/linux/mpc83xx/patches-3.14/111-etsec27_war.patch
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--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -1050,10 +1050,16 @@ static int gfar_probe(struct platform_de
 	udelay(2);
 
 	tempval = 0;
-	if (!priv->pause_aneg_en && priv->tx_pause_en)
-		tempval |= MACCFG1_TX_FLOW;
-	if (!priv->pause_aneg_en && priv->rx_pause_en)
-		tempval |= MACCFG1_RX_FLOW;
+	/*
+	 * Do not enable flow control on chips earlier than rev 1.1,
+	 * because of the eTSEC27 erratum
+	 */
+	if ((mfspr(SPRN_SVR) & 0xffff) >= 0x0011) {
+		if (!priv->pause_aneg_en && priv->tx_pause_en)
+			tempval |= MACCFG1_TX_FLOW;
+		if (!priv->pause_aneg_en && priv->rx_pause_en)
+			tempval |= MACCFG1_RX_FLOW;
+	}
 	/* the soft reset bit is not self-resetting, so we need to
 	 * clear it before resuming normal operation
 	 */