bnxt: Search VPD with pci_vpd_find_ro_info_keyword()

Use pci_vpd_find_ro_info_keyword() to search for keywords in VPD to
simplify the code.

Link: https://lore.kernel.org/r/f062921c-ad33-3b3e-8ada-b53427a9cd4a@gmail.comSigned-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -12980,8 +12980,8 @@ static int bnxt_init_mac_addr(struct bnxt *bp)
 static void bnxt_vpd_read_info(struct bnxt *bp)
 {
 	struct pci_dev *pdev = bp->pdev;
-	int i, len, pos, ro_size, size;
-	unsigned int vpd_size;
+	unsigned int vpd_size, kw_len;
+	int pos, size;
 	u8 *vpd_data;
 
 	vpd_data = pci_vpd_alloc(pdev, &vpd_size);
@@ -12990,42 +12990,22 @@ static void bnxt_vpd_read_info(struct bnxt *bp)
 		return;
 	}
 
-	i = pci_vpd_find_tag(vpd_data, vpd_size, PCI_VPD_LRDT_RO_DATA);
-	if (i < 0) {
-		netdev_err(bp->dev, "VPD READ-Only not found\n");
-		goto exit;
-	}
-
-	ro_size = pci_vpd_lrdt_size(&vpd_data[i]);
-	i += PCI_VPD_LRDT_TAG_SIZE;
-	if (i + ro_size > vpd_size)
-		goto exit;
-
-	pos = pci_vpd_find_info_keyword(vpd_data, i, ro_size,
-					PCI_VPD_RO_KEYWORD_PARTNO);
+	pos = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size,
+					   PCI_VPD_RO_KEYWORD_PARTNO, &kw_len);
 	if (pos < 0)
 		goto read_sn;
 
-	len = pci_vpd_info_field_size(&vpd_data[pos]);
-	pos += PCI_VPD_INFO_FLD_HDR_SIZE;
-	if (len + pos > vpd_size)
-		goto read_sn;
-
-	size = min(len, BNXT_VPD_FLD_LEN - 1);
+	size = min_t(int, kw_len, BNXT_VPD_FLD_LEN - 1);
 	memcpy(bp->board_partno, &vpd_data[pos], size);
 
 read_sn:
-	pos = pci_vpd_find_info_keyword(vpd_data, i, ro_size,
-					PCI_VPD_RO_KEYWORD_SERIALNO);
+	pos = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size,
+					   PCI_VPD_RO_KEYWORD_SERIALNO,
+					   &kw_len);
 	if (pos < 0)
 		goto exit;
 
-	len = pci_vpd_info_field_size(&vpd_data[pos]);
-	pos += PCI_VPD_INFO_FLD_HDR_SIZE;
-	if (len + pos > vpd_size)
-		goto exit;
-
-	size = min(len, BNXT_VPD_FLD_LEN - 1);
+	size = min_t(int, kw_len, BNXT_VPD_FLD_LEN - 1);
 	memcpy(bp->board_serialno, &vpd_data[pos], size);
 exit:
 	kfree(vpd_data);