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| author | Heiner Kallweit <hkallweit1@gmail.com> | 2021-08-26 21:55:43 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-09-01 00:08:15 +0300 |
| commit | acfbb1b8a494d7bfd316dfb363a820e6df637e8d (patch) | |
| tree | 3e0cadbca3067d42af92ecb1f6f012a3a2d5b60f | |
| parent | 46a347835cc50b04da0996a070939ed8927d69bd (diff) | |
| download | linux-acfbb1b8a494d7bfd316dfb363a820e6df637e8d.tar.xz | |
PCI/VPD: Add pci_vpd_find_id_string()
Add a pci_vpd_find_id_string() API function to retrieve the ID string from
VPD.
This way callers don't need pci_vpd_lrdt_size() any longer, and it can be
made private to the VPD core.
Link: https://lore.kernel.org/r/c5225bf6-8d29-970d-e271-0d7b52252630@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/pci/vpd.c | 6 | ||||
| -rw-r--r-- | include/linux/pci.h | 10 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c index b7bf014ccc5f..79712b3d17b6 100644 --- a/drivers/pci/vpd.c +++ b/drivers/pci/vpd.c @@ -320,6 +320,12 @@ static int pci_vpd_find_tag(const u8 *buf, unsigned int len, u8 rdt, unsigned in return -ENOENT; } +int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size) +{ + return pci_vpd_find_tag(buf, len, PCI_VPD_LRDT_ID_STRING, size); +} +EXPORT_SYMBOL_GPL(pci_vpd_find_id_string); + static int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, unsigned int len, const char *kw) { diff --git a/include/linux/pci.h b/include/linux/pci.h index 196cbf4c76a1..ea330ca0501a 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2340,6 +2340,16 @@ static inline u8 pci_vpd_info_field_size(const u8 *info_field) void *pci_vpd_alloc(struct pci_dev *dev, unsigned int *size); /** + * pci_vpd_find_id_string - Locate id string in VPD + * @buf: Pointer to buffered VPD data + * @len: The length of the buffer area in which to search + * @size: Pointer to field where length of id string is returned + * + * Returns the index of the id string or -ENOENT if not found. + */ +int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size); + +/** * pci_vpd_find_ro_info_keyword - Locate info field keyword in VPD RO section * @buf: Pointer to buffered VPD data * @len: The length of the buffer area in which to search |