netxen: fix firmware type check

Unified firmware image may not contain MN type of firmware.
Driver should fall back to NOMN firmware type instead
of going to flash.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/netxen/netxen_nic_init.c

@@ -619,17 +619,20 @@ nx_set_product_offs(struct netxen_adapter *adapter)
 	uint32_t i;
 	__le32 entries;
 
+	int mn_present = (NX_IS_REVISION_P2(adapter->ahw.revision_id)) ?
+			1 : netxen_p3_has_mn(adapter);
+
 	ptab_descr = nx_get_table_desc(unirom, NX_UNI_DIR_SECT_PRODUCT_TBL);
 	if (ptab_descr == NULL)
 		return -1;
 
 	entries = cpu_to_le32(ptab_descr->num_entries);
 
+nomn:
 	for (i = 0; i < entries; i++) {
 
 		__le32 flags, file_chiprev, offs;
 		u8 chiprev = adapter->ahw.revision_id;
-		int mn_present = netxen_p3_has_mn(adapter);
 		uint32_t flagbit;
 
 		offs = cpu_to_le32(ptab_descr->findex) +
@@ -647,6 +650,11 @@ nx_set_product_offs(struct netxen_adapter *adapter)
 		}
 	}
 
+	if (mn_present && NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
+		mn_present = 0;
+		goto nomn;
+	}
+
 	return -1;
 }
 
@@ -1021,6 +1029,10 @@ netxen_p3_has_mn(struct netxen_adapter *adapter)
 	u32 capability, flashed_ver;
 	capability = 0;
 
+	/* NX2031 always had MN */
+	if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
+		return 1;
+
 	netxen_rom_fast_read(adapter,
 			NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
 	flashed_ver = NETXEN_DECODE_VERSION(flashed_ver);