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| author | Stephen Hemminger <shemminger@vyatta.com> | 2008-12-18 18:17:16 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 20:13:18 +0100 |
| commit | db5679437a2b938c9127480a3923633721583a4f (patch) | |
| tree | b2625345baa35490104b81fc1c7bd8ef6bb74100 /drivers/pci/access.c | |
| parent | PCI: revise VPD access interface (diff) | |
| download | linux-db5679437a2b938c9127480a3923633721583a4f.tar.xz linux-db5679437a2b938c9127480a3923633721583a4f.zip | |
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.c | 23 |
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 * |