Staging: et131x: kill TxMacTest field

It's really a local in the interrupt handler
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/et131x/et131x_adapter.h

@@ -213,9 +213,6 @@ struct et131x_adapter {
 	u32 MCAddressCount;
 	u8 MCList[NIC_MAX_MCAST_LIST][ETH_ALEN];
 
-	/* MAC test */
-	u32 TxMacTest;
-
 	/* Pointer to the device's PCI register space */
 	ADDRESS_MAP_t __iomem *regs;
 

drivers/staging/et131x/et131x_isr.c

@@ -337,10 +337,9 @@ void et131x_isr_handler(struct work_struct *work)
 			 */
 			/* TRAP();*/
 
-			etdev->TxMacTest = readl(&iomem->txmac.tx_test);
 			dev_warn(&etdev->pdev->dev,
 				    "RxDMA_ERR interrupt, error %x\n",
-				    etdev->TxMacTest);
+				    readl(&iomem->txmac.tx_test));
 		}
 
 		/* Handle the Wake on LAN Event */