From b55ac1b22690d2e5b02a61cf6d69c2d66969c79d Mon Sep 17 00:00:00 2001 From: Matt Carlson Date: Fri, 26 Feb 2010 14:04:41 +0000 Subject: pci: Add helper to find a VPD resource data type This patch adds the pci_vpd_find_tag() helper function to find VPD resource data types in a buffer. Signed-off-by: Matt Carlson Signed-off-by: Michael Chan Acked-by: Jesse Barnes Signed-off-by: David S. Miller --- include/linux/pci.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux/pci.h') diff --git a/include/linux/pci.h b/include/linux/pci.h index 198d062..e30ceea 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1395,5 +1395,17 @@ static inline u8 pci_vpd_srdt_size(const u8 *srdt) return (*srdt) & PCI_VPD_SRDT_LEN_MASK; } +/** + * pci_vpd_find_tag - Locates the Resource Data Type tag provided + * @buf: Pointer to buffered vpd data + * @off: The offset into the buffer at which to begin the search + * @len: The length of the vpd buffer + * @rdt: The Resource Data Type to search for + * + * Returns the index where the Resource Data Type was found or + * -ENOENT otherwise. + */ +int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); + #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */ -- cgit v1.1