atl1: make function to set imr of card

This function should be used later to set/remove proper
bits in imr to disable only rx ints.
Signed-off-by: NTony Zelenoff <antonz@parallels.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/atheros/atlx/atlx.c

@@ -155,14 +155,20 @@ static void atlx_set_multi(struct net_device *netdev)
 	}
 }
 
+static inline void atlx_imr_set(struct atlx_adapter *adapter,
+				unsigned int imr)
+{
+	iowrite32(imr, adapter->hw.hw_addr + REG_IMR);
+	ioread32(adapter->hw.hw_addr + REG_IMR);
+}
+
 /*
  * atlx_irq_enable - Enable default interrupt generation settings
  * @adapter: board private structure
  */
 static void atlx_irq_enable(struct atlx_adapter *adapter)
 {
-	iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
-	ioread32(adapter->hw.hw_addr + REG_IMR);
+	atlx_imr_set(adapter, IMR_NORMAL_MASK);
 }
 
 /*
@@ -171,8 +177,7 @@ static void atlx_irq_enable(struct atlx_adapter *adapter)
  */
 static void atlx_irq_disable(struct atlx_adapter *adapter)
 {
-	iowrite32(0, adapter->hw.hw_addr + REG_IMR);
-	ioread32(adapter->hw.hw_addr + REG_IMR);
+	atlx_imr_set(adapter, 0);
 	synchronize_irq(adapter->pdev->irq);
 }