diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
index b7bf014ccc5f..79712b3d17b6 100644
--- a/drivers/pci/vpd.c
+++ b/drivers/pci/vpd.c
@@ -320,6 +320,12 @@ static int pci_vpd_find_tag(const u8 *buf, unsigned int len, u8 rdt, unsigned in
 	return -ENOENT;
 }
 
+int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size)
+{
+	return pci_vpd_find_tag(buf, len, PCI_VPD_LRDT_ID_STRING, size);
+}
+EXPORT_SYMBOL_GPL(pci_vpd_find_id_string);
+
 static int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
 			      unsigned int len, const char *kw)
 {
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 196cbf4c76a1..ea330ca0501a 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2339,6 +2339,16 @@ static inline u8 pci_vpd_info_field_size(const u8 *info_field)
  */
 void *pci_vpd_alloc(struct pci_dev *dev, unsigned int *size);
 
+/**
+ * pci_vpd_find_id_string - Locate id string in VPD
+ * @buf: Pointer to buffered VPD data
+ * @len: The length of the buffer area in which to search
+ * @size: Pointer to field where length of id string is returned
+ *
+ * Returns the index of the id string or -ENOENT if not found.
+ */
+int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size);
+
 /**
  * pci_vpd_find_ro_info_keyword - Locate info field keyword in VPD RO section
  * @buf: Pointer to buffered VPD data