tg3: Don't touch RCB nic addresses

This patch avoids reprogramming the RCB NIC addresses for all 5755 and
later devices.  The address is incorrect for 5717 devices and should be
correct by default for all other affected devices.
Signed-off-by: NMatt Carlson <mcarlson@broadcom.com>
Reviewed-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/tg3.c

@@ -7404,8 +7404,9 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 	     ((u64) tpr->rx_std_mapping >> 32));
 	tw32(RCVDBDI_STD_BD + TG3_BDINFO_HOST_ADDR + TG3_64BIT_REG_LOW,
 	     ((u64) tpr->rx_std_mapping & 0xffffffff));
-	tw32(RCVDBDI_STD_BD + TG3_BDINFO_NIC_ADDR,
-	     NIC_SRAM_RX_BUFFER_DESC);
+	if (!(tp->tg3_flags3 & TG3_FLG3_5755_PLUS))
+		tw32(RCVDBDI_STD_BD + TG3_BDINFO_NIC_ADDR,
+		     NIC_SRAM_RX_BUFFER_DESC);
 
 	/* Disable the mini ring */
 	if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS))
@@ -7428,8 +7429,9 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 			tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_MAXLEN_FLAGS,
 			     (RX_JUMBO_MAX_SIZE << BDINFO_FLAGS_MAXLEN_SHIFT) |
 			     BDINFO_FLAGS_USE_EXT_RECV);
-			tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_NIC_ADDR,
-			     NIC_SRAM_RX_JUMBO_BUFFER_DESC);
+			if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS))
+				tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_NIC_ADDR,
+				     NIC_SRAM_RX_JUMBO_BUFFER_DESC);
 		} else {
 			tw32(RCVDBDI_JUMBO_BD + TG3_BDINFO_MAXLEN_FLAGS,
 			     BDINFO_FLAGS_DISABLED);