pci: Add PCI LRDT tag size and section size

This patch adds a preprocessor constant to describe the PCI VPD large
resource data type tag size and an inline function to extract the large
resource section size from the large resource data type tag.

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, 6 insertions, 7 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 0d06e4007f44..5fccbe459949 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -12590,19 +12590,18 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
                 unsigned int block_end;
 
                 if (val == 0x82 || val == 0x91) {
-                        i = (i + 3 +
-                             (vpd_data[i + 1] +
-                              (vpd_data[i + 2] << 8)));
+                        i += PCI_VPD_LRDT_TAG_SIZE +
+                             pci_vpd_lrdt_size(&vpd_data[i]);
                         continue;
                 }
 
                 if (val != 0x90)
                         goto out_not_found;
 
-                block_end = (i + 3 +
-                             (vpd_data[i + 1] +
-                              (vpd_data[i + 2] << 8)));
-                i += 3;
+                block_end = i + PCI_VPD_LRDT_TAG_SIZE +
+                            pci_vpd_lrdt_size(&vpd_data[i]);
+
+                i += PCI_VPD_LRDT_TAG_SIZE;
 
                 if (block_end > TG3_NVM_VPD_LEN)
                         goto out_not_found;