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| author | Matt Carlson <mcarlson@broadcom.com> | 2010-02-26 14:04:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-28 00:43:33 -0800 |
| commit | 4067a8541d397e9d6b443dd2ce0ecb78bfd991db (patch) | |
| tree | 49690419b218020b8a0e9381db2f9cc90b658cd0 /drivers/net/tg3.c | |
| parent | e1d5bdabb94da89bdb3c3f2ee105cf61fca88ec8 (diff) | |
| download | lwn-4067a8541d397e9d6b443dd2ce0ecb78bfd991db.tar.gz lwn-4067a8541d397e9d6b443dd2ce0ecb78bfd991db.zip | |
pci: Add helper to search for VPD keywords
This patch adds the pci_vpd_find_info_keyword() helper function to
find information field keywords within read-only and read-write large
resource data type sections.
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>
Diffstat (limited to 'drivers/net/tg3.c')
| -rw-r--r-- | drivers/net/tg3.c | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index f59f36910e98..204c565caa5a 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -12586,39 +12586,33 @@ static void __devinit tg3_read_partno(struct tg3 *tp) /* Now parse and find the part number. */ for (i = 0; i < TG3_NVM_VPD_LEN - 2; ) { - unsigned int block_end; + unsigned int block_end, rosize; i = pci_vpd_find_tag(vpd_data, i, TG3_NVM_VPD_LEN, PCI_VPD_LRDT_RO_DATA); if (i < 0) break; - block_end = i + PCI_VPD_LRDT_TAG_SIZE + - pci_vpd_lrdt_size(&vpd_data[i]); - + rosize = pci_vpd_lrdt_size(&vpd_data[i]); + block_end = i + PCI_VPD_LRDT_TAG_SIZE + rosize; i += PCI_VPD_LRDT_TAG_SIZE; if (block_end > TG3_NVM_VPD_LEN) goto out_not_found; - while (i < (block_end - 2)) { - if (vpd_data[i + 0] == 'P' && - vpd_data[i + 1] == 'N') { - int partno_len = pci_vpd_info_field_size(&vpd_data[i]); + i = pci_vpd_find_info_keyword(vpd_data, i, rosize, + PCI_VPD_RO_KEYWORD_PARTNO); + if (i > 0) { + u8 len = pci_vpd_info_field_size(&vpd_data[i]); - i += PCI_VPD_INFO_FLD_HDR_SIZE; - if (partno_len > TG3_BPN_SIZE || - (partno_len + i) > TG3_NVM_VPD_LEN) - goto out_not_found; + i += PCI_VPD_INFO_FLD_HDR_SIZE; + if (len > TG3_BPN_SIZE || + (len + i) > TG3_NVM_VPD_LEN) + break; - memcpy(tp->board_part_number, - &vpd_data[i], partno_len); + memcpy(tp->board_part_number, &vpd_data[i], len); - /* Success. */ - return; - } - i += PCI_VPD_INFO_FLD_HDR_SIZE + - pci_vpd_info_field_size(&vpd_data[i]); + return; } /* Part number not found. */ |