[PATCH 4/7] PCI/VPD: Add pci_vpd_find_id_string()
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STALE1871d
LANDED
From: Heiner Kallweit <hkallweit1@gmail.com>
Date: 2021-08-26 18:58:38
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
Landed in mainline as acfbb1b8a494 on 2021-08-31.
Similar to pci_vpd_find_ro_info_keyword() provide an API function to retrieve the ID string from VPD. This way callers don't have to deal with low-level function pci_vpd_lrdt_size() any longer that can be made private to the VPD core in a subsequent patch. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> --- drivers/pci/vpd.c | 6 ++++++ include/linux/pci.h | 10 ++++++++++ 2 files changed, 16 insertions(+)
diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
index b7bf014cc..79712b3d1 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 0d6c45b1b..f83930562 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h@@ -2350,6 +2350,16 @@ 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
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2.33.0