From db5679437a2b938c9127480a3923633721583a4f Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Thu, 18 Dec 2008 09:17:16 -0800
Subject: PCI: add interface to set visible size of VPD
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@vyatta.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
drivers/pci/access.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
(limited to 'drivers')
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 86ec4ad44bc..38144479477 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -339,6 +339,29 @@ int pci_vpd_pci22_init(struct pci_dev *dev)
return 0;
}
+/**
+ * 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
--
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