The VPD on all devices may not be 32K. Unfortunately, there is no
generic way to find the size, so this adds a simple API hook
to reset it.
Signed-off-by: Stephen Hemminger <shemminger@xxxxxxxxxx>
---
drivers/pci/access.c | 23 +++++++++++++++++++++++
include/linux/pci.h | 1 +
2 files changed, 24 insertions(+)
--- a/drivers/pci/access.c 2008-09-09 13:57:05.000000000 -0700
+++ b/drivers/pci/access.c 2008-09-09 13:57:06.000000000 -0700
@@ -340,6 +340,29 @@ int pci_vpd_pci22_init(struct pci_dev *d
}
/**
+ * pci_vpd_truncate - Set available Vital Product Data size
+ * @dev: pci device struct
+ * @size: available memory in bytes
+ *
+ * Adjust size of available VPD area.
+ */
+int pci_vpd_truncate(struct pci_dev *dev, size_t size)
+{
+ if (!dev->vpd)
+ return -EINVAL;
+
+ /* limited by the access method */
+ if (size > dev->vpd->len)
+ return -EINVAL;
+
+ dev->vpd->len = size;
+ dev->vpd->attr->size = size;
+
+ return 0;
+}
+EXPORT_SYMBOL(pci_vpd_truncate);
+
+/**
* pci_block_user_cfg_access - Block userspace PCI config reads/writes
* @dev: pci device struct
*
--- a/include/linux/pci.h 2008-09-09 13:57:05.000000000 -0700
+++ b/include/linux/pci.h 2008-09-09 13:57:06.000000000 -0700
@@ -653,6 +653,7 @@ int pci_bus_find_capability(struct pci_b
/* Vital product data routines */
ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
+int pci_vpd_truncate(struct pci_dev *dev, size_t size);
/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
void pci_bus_assign_resources(struct pci_bus *bus);
--
--
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