[PATCH 3/3] PCI: add interface to set visible size of VPD

[Stephen Hemminger]

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>

--- a/drivers/pci/access.c	2008-09-04 11:29:22.000000000 -0700
+++ b/drivers/pci/access.c	2008-09-04 11:38:29.000000000 -0700
@@ -332,6 +332,24 @@ int pci_vpd_pci22_init(struct pci_dev *d
 }
 
 /**
+ * pci_vpd_size - Set available Vital Product Data size
+ * @dev:	pci device struct
+ * @size:	available memory in bytes
+ *
+ * Adjust size of available VPD area.
+ */
+int pci_vpd_size(struct pci_dev *dev, size_t size)
+{
+	if (!dev->vpd)
+		return -EINVAL;
+	if (size > PCI_VPD_PCI22_SIZE)
+		return -EINVAL;
+	dev->vpd->len = size;
+	return 0;
+}
+EXPORT_SYMBOL(pci_vpd_size);
+
+/**
  * pci_block_user_cfg_access - Block userspace PCI config reads/writes
  * @dev:	pci device struct
  *
--- a/include/linux/pci.h	2008-09-04 11:28:45.000000000 -0700
+++ b/include/linux/pci.h	2008-09-04 11:29:15.000000000 -0700
@@ -653,6 +653,7 @@ int pci_bus_find_capability(struct pci_b
 /* Vital product data routines */
 int pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
 int pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
+int pci_vpd_size(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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