sky2: B0_Y2LED controls the LEDs for both ports

Only disable LED status control when both ports are disabled. The previous code disabled LED status control unconditionally
in sky2_down.

Tested with the limitation that my sky2 interface has no LEDs
and a single port.

Signed-off-by Mike McCormack <[email protected]>

---
 drivers/net/sky2.c |   23 ++++++++++++++++++++---
 1 files changed, 20 insertions(+), 3 deletions(-)

drivers/net/sky2.c +19 -2

index 2827f0d..864b8dc 100644
@@ -213,6 +213,22 @@ static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg)
 	return v;
 }
 
+static void sky2_disable_status_led(struct sky2_port *sky2)
+{
+	struct sky2_hw *hw = sky2->hw;
+	struct net_device *otherdev = hw->dev[sky2->port^1];
+
+	if (!(otherdev && netif_running(otherdev))) {
+		sky2_write8(hw, B0_Y2LED, LED_STAT_OFF);
+	}
+}
+
+static void sky2_enable_status_led(struct sky2_port *sky2)
+{
+	struct sky2_hw *hw = sky2->hw;
+
+	sky2_write8(hw, B0_Y2LED, LED_STAT_ON);
+}
 
 static void sky2_power_on(struct sky2_hw *hw)
 {

@@ -1530,6 +1546,8 @@ static int sky2_up(struct net_device *dev)
 	if (err)
 		goto err_out;
 
+	sky2_enable_status_led(sky2);
+
 	/* Enable interrupts from phy/mac for port */
 	imask = sky2_read32(hw, B0_IMSK);
 	imask |= portirq_msk[port];

@@ -1886,8 +1904,7 @@ static int sky2_down(struct net_device *dev)
 	sky2_phy_power_down(hw, port);
 	spin_unlock_bh(&sky2->phy_lock);
 
-	/* turn off LED's */
-	sky2_write16(hw, B0_Y2LED, LED_STAT_OFF);
+	sky2_disable_status_led(sky2);
 
 	sky2_tx_reset(hw, port);