Revert "bnx2x: Search VPD with pci_vpd_find_ro_info_keyword()"

This reverts commit da41788.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c

@@ -12189,31 +12189,58 @@ static int bnx2x_get_hwinfo(struct bnx2x *bp)
 
 static void bnx2x_read_fwinfo(struct bnx2x *bp)
 {
-	char str_id[VENDOR_ID_LEN + 1];
-	unsigned int vpd_len, kw_len;
-	u8 *vpd_data;
-	int rodi;
+	int i, block_end, rodi;
+	char str_id_reg[VENDOR_ID_LEN+1];
+	char str_id_cap[VENDOR_ID_LEN+1];
+	unsigned int vpd_len;
+	u8 *vpd_data, len;
 
 	memset(bp->fw_ver, 0, sizeof(bp->fw_ver));
 
 	vpd_data = pci_vpd_alloc(bp->pdev, &vpd_len);
 	if (IS_ERR(vpd_data))
 		return;
 
-	rodi = pci_vpd_find_ro_info_keyword(vpd_data, vpd_len,
-					    PCI_VPD_RO_KEYWORD_MFR_ID, &kw_len);
-	if (rodi < 0 || kw_len != VENDOR_ID_LEN)
+	/* VPD RO tag should be first tag after identifier string, hence
+	 * we should be able to find it in first BNX2X_VPD_LEN chars
+	 */
+	i = pci_vpd_find_tag(vpd_data, vpd_len, PCI_VPD_LRDT_RO_DATA);
+	if (i < 0)
+		goto out_not_found;
+
+	block_end = i + PCI_VPD_LRDT_TAG_SIZE +
+		    pci_vpd_lrdt_size(&vpd_data[i]);
+	i += PCI_VPD_LRDT_TAG_SIZE;
+
+	rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
+				   PCI_VPD_RO_KEYWORD_MFR_ID);
+	if (rodi < 0)
+		goto out_not_found;
+
+	len = pci_vpd_info_field_size(&vpd_data[rodi]);
+
+	if (len != VENDOR_ID_LEN)
 		goto out_not_found;
 
+	rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
+
 	/* vendor specific info */
-	snprintf(str_id, VENDOR_ID_LEN + 1, "%04X", PCI_VENDOR_ID_DELL);
-	if (!strncmp(str_id, &vpd_data[rodi], VENDOR_ID_LEN)) {
-		rodi = pci_vpd_find_ro_info_keyword(vpd_data, vpd_len,
-						    PCI_VPD_RO_KEYWORD_VENDOR0,
-						    &kw_len);
-		if (rodi >= 0 && kw_len < sizeof(bp->fw_ver)) {
-			memcpy(bp->fw_ver, &vpd_data[rodi], kw_len);
-			bp->fw_ver[kw_len] = ' ';
+	snprintf(str_id_reg, VENDOR_ID_LEN + 1, "%04x", PCI_VENDOR_ID_DELL);
+	snprintf(str_id_cap, VENDOR_ID_LEN + 1, "%04X", PCI_VENDOR_ID_DELL);
+	if (!strncmp(str_id_reg, &vpd_data[rodi], VENDOR_ID_LEN) ||
+	    !strncmp(str_id_cap, &vpd_data[rodi], VENDOR_ID_LEN)) {
+
+		rodi = pci_vpd_find_info_keyword(vpd_data, i, block_end,
+						PCI_VPD_RO_KEYWORD_VENDOR0);
+		if (rodi >= 0) {
+			len = pci_vpd_info_field_size(&vpd_data[rodi]);
+
+			rodi += PCI_VPD_INFO_FLD_HDR_SIZE;
+
+			if (len < 32 && (len + rodi) <= vpd_len) {
+				memcpy(bp->fw_ver, &vpd_data[rodi], len);
+				bp->fw_ver[len] = ' ';
+			}
 		}
 	}
 out_not_found: