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| author | Matt Carlson <mcarlson@broadcom.com> | 2010-02-26 15:04:43 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-28 09:43:33 +0100 |
| commit | 4067a8541d397e9d6b443dd2ce0ecb78bfd991db (patch) | |
| tree | 49690419b218020b8a0e9381db2f9cc90b658cd0 /drivers/pci/vpd.c | |
| parent | pci: Add VPD information field helper functions (diff) | |
| download | linux-4067a8541d397e9d6b443dd2ce0ecb78bfd991db.tar.xz linux-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/pci/vpd.c')
| -rw-r--r-- | drivers/pci/vpd.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c index 6bc554576f8d..a5a5ca17cfe6 100644 --- 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); |