diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index f2b0839f9810..bce0f22677c1 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10573,7 +10573,7 @@ static void tg3_get_ethtool_stats(struct net_device *dev,
 	memcpy(tmp_stats, tg3_get_estats(tp), sizeof(tp->estats));
 }
 
-static __be32 * tg3_vpd_readblock(struct tg3 *tp)
+static __be32 *tg3_vpd_readblock(struct tg3 *tp, u32 *vpdlen)
 {
 	int i;
 	__be32 *buf;
@@ -10640,6 +10640,8 @@ static __be32 * tg3_vpd_readblock(struct tg3 *tp)
 			goto error;
 	}
 
+	*vpdlen = len;
+
 	return buf;
 
 error:
@@ -10659,7 +10661,7 @@ error:
 
 static int tg3_test_nvram(struct tg3 *tp)
 {
-	u32 csum, magic;
+	u32 csum, magic, len;
 	__be32 *buf;
 	int i, j, k, err = 0, size;
 
@@ -10800,18 +10802,17 @@ static int tg3_test_nvram(struct tg3 *tp)
 
 	kfree(buf);
 
-	buf = tg3_vpd_readblock(tp);
+	buf = tg3_vpd_readblock(tp, &len);
 	if (!buf)
 		return -ENOMEM;
 
-	i = pci_vpd_find_tag((u8 *)buf, 0, TG3_NVM_VPD_LEN,
-			     PCI_VPD_LRDT_RO_DATA);
+	i = pci_vpd_find_tag((u8 *)buf, 0, len, PCI_VPD_LRDT_RO_DATA);
 	if (i > 0) {
 		j = pci_vpd_lrdt_size(&((u8 *)buf)[i]);
 		if (j < 0)
 			goto out;
 
-		if (i + PCI_VPD_LRDT_TAG_SIZE + j > TG3_NVM_VPD_LEN)
+		if (i + PCI_VPD_LRDT_TAG_SIZE + j > len)
 			goto out;
 
 		i += PCI_VPD_LRDT_TAG_SIZE;
@@ -13209,14 +13210,14 @@ static void __devinit tg3_read_vpd(struct tg3 *tp)
 {
 	u8 *vpd_data;
 	unsigned int block_end, rosize, len;
+	u32 vpdlen;
 	int j, i = 0;
 
-	vpd_data = (u8 *)tg3_vpd_readblock(tp);
+	vpd_data = (u8 *)tg3_vpd_readblock(tp, &vpdlen);
 	if (!vpd_data)
 		goto out_no_vpd;
 
-	i = pci_vpd_find_tag(vpd_data, 0, TG3_NVM_VPD_LEN,
-			     PCI_VPD_LRDT_RO_DATA);
+	i = pci_vpd_find_tag(vpd_data, 0, vpdlen, PCI_VPD_LRDT_RO_DATA);
 	if (i < 0)
 		goto out_not_found;
 
@@ -13224,7 +13225,7 @@ static void __devinit tg3_read_vpd(struct tg3 *tp)
 	block_end = i + PCI_VPD_LRDT_TAG_SIZE + rosize;
 	i += PCI_VPD_LRDT_TAG_SIZE;
 
-	if (block_end > TG3_NVM_VPD_LEN)
+	if (block_end > vpdlen)
 		goto out_not_found;
 
 	j = pci_vpd_find_info_keyword(vpd_data, i, rosize,
@@ -13249,7 +13250,7 @@ static void __devinit tg3_read_vpd(struct tg3 *tp)
 			goto partno;
 
 		memcpy(tp->fw_ver, &vpd_data[j], len);
-		strncat(tp->fw_ver, " bc ", TG3_NVM_VPD_LEN - len - 1);
+		strncat(tp->fw_ver, " bc ", vpdlen - len - 1);
 	}
 
 partno:
@@ -13262,7 +13263,7 @@ partno:
 
 	i += PCI_VPD_INFO_FLD_HDR_SIZE;
 	if (len > TG3_BPN_SIZE ||
-	    (len + i) > TG3_NVM_VPD_LEN)
+	    (len + i) > vpdlen)
 		goto out_not_found;
 
 	memcpy(tp->board_part_number, &vpd_data[i], len);