pci: Add helper to search for VPD keywords

[net-next-2.6.git] / drivers / pci / vpd.c

diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
index 6bc554576f8db51794c7308ca20cf3da61fc20c1..a5a5ca17cfe6bd9bb28afc0248546f80dca6cf99 100644 (file)
--- a/drivers/pci/vpd.c
+++ b/drivers/pci/vpd.c
@@ -41,3 +41,21 @@ int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt)
        return -ENOENT;
 }
 EXPORT_SYMBOL_GPL(pci_vpd_find_tag);
+
+int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
+                             unsigned int len, const char *kw)
+{
+       int i;
+
+       for (i = off; i + PCI_VPD_INFO_FLD_HDR_SIZE <= off + len;) {
+               if (buf[i + 0] == kw[0] &&
+                   buf[i + 1] == kw[1])
+                       return i;
+
+               i += PCI_VPD_INFO_FLD_HDR_SIZE +
+                    pci_vpd_info_field_size(&buf[i]);
+       }
+
+       return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(pci_vpd_find_info_keyword);