pci: Add helper to find a VPD resource data type

This patch adds the pci_vpd_find_tag() helper function to find VPD
resource data types in a buffer.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 20 deletions

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 084ef102b8c4..fd43feb5a350 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -7769,28 +7769,12 @@ bnx2_read_vpd_fw_ver(struct bnx2 *bp)
         }
 
         for (i = 0; i <= BNX2_VPD_LEN - 3; ) {
-                unsigned char val = data[i];
                 unsigned int block_end;
 
-                if (val & PCI_VPD_LRDT) {
-                        if (i + PCI_VPD_LRDT_TAG_SIZE > BNX2_VPD_LEN)
-                                break;
-
-                        if (val != PCI_VPD_LRDT_RO_DATA) {
-                                i += PCI_VPD_LRDT_TAG_SIZE +
-                                     pci_vpd_lrdt_size(&data[i]);
-
-                                continue;
-                        }
-                } else {
-                        if ((val & PCI_VPD_SRDT_TIN_MASK) == PCI_VPD_STIN_END)
-                                break;
-
-                        i += PCI_VPD_SRDT_TAG_SIZE +
-                             pci_vpd_srdt_size(&data[i]);
-
-                        continue;
-                }
+                i = pci_vpd_find_tag(data, i, BNX2_VPD_LEN,
+                                     PCI_VPD_LRDT_RO_DATA);
+                if (i < 0)
+                        break;
 
                 block_end = (i + PCI_VPD_LRDT_TAG_SIZE +
                             pci_vpd_lrdt_size(&data[i]));