diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c
index d1669bcd4b4d..208e25a9e08c 100644
--- a/drivers/net/ethernet/micrel/ks8851.c
+++ b/drivers/net/ethernet/micrel/ks8851.c
@@ -342,6 +342,26 @@ static void ks8851_soft_reset(struct ks8851_net *ks, unsigned op)
 	mdelay(1);	/* wait for condition to clear */
 }
 
+/**
+ * ks8851_set_powermode - set power mode of the device
+ * @ks: The device state
+ * @pwrmode: The power mode value to write to KS_PMECR.
+ *
+ * Change the power mode of the chip.
+ */
+static void ks8851_set_powermode(struct ks8851_net *ks, unsigned pwrmode)
+{
+	unsigned pmecr;
+
+	netif_dbg(ks, hw, ks->netdev, "setting power mode %d\n", pwrmode);
+
+	pmecr = ks8851_rdreg16(ks, KS_PMECR);
+	pmecr &= ~PMECR_PM_MASK;
+	pmecr |= pwrmode;
+
+	ks8851_wrreg16(ks, KS_PMECR, pmecr);
+}
+
 /**
  * ks8851_write_mac_addr - write mac address to device registers
  * @dev: The network device
@@ -358,8 +378,15 @@ static int ks8851_write_mac_addr(struct net_device *dev)
 
 	mutex_lock(&ks->lock);
 
+	/*
+	 * Wake up chip in case it was powered off when stopped; otherwise,
+	 * the first write to the MAC address does not take effect.
+	 */
+	ks8851_set_powermode(ks, PMECR_PM_NORMAL);
 	for (i = 0; i < ETH_ALEN; i++)
 		ks8851_wrreg8(ks, KS_MAR(i), dev->dev_addr[i]);
+	if (!netif_running(dev))
+		ks8851_set_powermode(ks, PMECR_PM_SOFTDOWN);
 
 	mutex_unlock(&ks->lock);
 
@@ -764,26 +791,6 @@ static void ks8851_tx_work(struct work_struct *work)
 	mutex_unlock(&ks->lock);
 }
 
-/**
- * ks8851_set_powermode - set power mode of the device
- * @ks: The device state
- * @pwrmode: The power mode value to write to KS_PMECR.
- *
- * Change the power mode of the chip.
- */
-static void ks8851_set_powermode(struct ks8851_net *ks, unsigned pwrmode)
-{
-	unsigned pmecr;
-
-	netif_dbg(ks, hw, ks->netdev, "setting power mode %d\n", pwrmode);
-
-	pmecr = ks8851_rdreg16(ks, KS_PMECR);
-	pmecr &= ~PMECR_PM_MASK;
-	pmecr |= pwrmode;
-
-	ks8851_wrreg16(ks, KS_PMECR, pmecr);
-}
-
 /**
  * ks8851_net_open - open network device
  * @dev: The network device being opened.
diff --git a/drivers/net/ethernet/micrel/ks8851.h b/drivers/net/ethernet/micrel/ks8851.h
index 537fb06e5932..b2703a11d04b 100644
--- a/drivers/net/ethernet/micrel/ks8851.h
+++ b/drivers/net/ethernet/micrel/ks8851.h
@@ -16,7 +16,7 @@
 #define CCR_32PIN				(1 << 0)
 
 /* MAC address registers */
-#define KS_MAR(_m)				0x15 - (_m)
+#define KS_MAR(_m)				(0x15 - (_m))
 #define KS_MARL					0x10
 #define KS_MARM					0x12
 #define KS_MARH					0x14