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authorStephen Hemminger <shemminger@vyatta.com>2008-12-18 20:17:16 +0300
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-01-07 22:13:18 +0300
commitdb5679437a2b938c9127480a3923633721583a4f (patch)
treeb2625345baa35490104b81fc1c7bd8ef6bb74100 /drivers/pci/access.c
parent287d19ce2e67c15e79a187b3bdcbbea1a0a51a7d (diff)
downloadlinux-db5679437a2b938c9127480a3923633721583a4f.tar.xz
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>
Diffstat (limited to 'drivers/pci/access.c')
-rw-r--r--drivers/pci/access.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 86ec4ad44bcd..381444794778 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -340,6 +340,29 @@ int pci_vpd_pci22_init(struct pci_dev *dev)
}
/**
+ * 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
*