staging: et131x: Remove redundant replica loopback code

A mechanism used to set the phy in loopback mode is not present in the driver, making associated checks and variables redundant. Removing them.
Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/et131x/et1310_address_map.h

 /*
  * Agere Systems Inc.
- * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
+ * 10/100/1000 Base-T Ethernet Driver for the ET1310 and ET131x series MACs
  *
  * Copyright © 2005 Agere Systems Inc.
  * All rights reserved.

drivers/staging/et131x/et1310_rx.c

@@ -988,17 +988,6 @@ static struct rfd *nic_rx_pkts(struct et131x_adapter *adapter)
 	}
 
 	if (len) {
-		if (adapter->replica_phy_loopbk == 1) {
-			buf = rx_local->fbr[ring_index]->virt[buff_index];
-
-			if (memcmp(&buf[6], adapter->addr, ETH_ALEN) == 0) {
-				if (memcmp(&buf[42], "Replica packet",
-					   ETH_HLEN)) {
-					adapter->replica_phy_loopbk_passfail = 1;
-				}
-			}
-		}
-
 		/* Determine if this is a multicast packet coming in */
 		if ((word0 & ALCATEL_MULTICAST_PKT) &&
 		    !(word0 & ALCATEL_BROADCAST_PKT)) {

drivers/staging/et131x/et131x_adapter.h

@@ -222,10 +222,6 @@ struct et131x_adapter {
 	/* Rx Memory Variables */
 	struct rx_ring rx_ring;
 
-	/* Loopback specifics */
-	u8 replica_phy_loopbk;		/* Replica Enable */
-	u8 replica_phy_loopbk_passfail;	/* Replica Enable Pass/Fail */
-
 	/* Stats */
 	struct ce_stats stats;
 

drivers/staging/et131x/et131x_isr.c

@@ -389,7 +389,6 @@ void et131x_isr_handler(struct work_struct *work)
 					(uint8_t) offsetof(struct mi_regs, isr),
 					&myisr);
 
-			if (!adapter->replica_phy_loopbk) {
 			et131x_mii_read(adapter,
 			       (uint8_t) offsetof(struct mi_regs, bmsr),
 			       &bmsr_data);
@@ -400,7 +399,6 @@ void et131x_isr_handler(struct work_struct *work)
 			/* Do all the cable in / cable out stuff */
 			et131x_mii_check(adapter, bmsr_data, bmsr_ints);
 		}
-		}
 
 		/* Let's move on to the TxMac */
 		if (status & ET_INTR_TXMAC) {