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| author | Huang Ying <ying.huang@intel.com> | 2009-04-24 10:45:17 +0800 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-06-16 14:29:33 -0700 |
| commit | a72b46c3849cdb05993015991bde548ab8b6d7ac (patch) | |
| tree | a782d4ab9c217792c9a8cefe48db9aebc0734dbe /drivers/pci/access.c | |
| parent | 1eb3948716f68bdb71509d0175765295f1aca23d (diff) | |
| download | lwn-a72b46c3849cdb05993015991bde548ab8b6d7ac.tar.gz lwn-a72b46c3849cdb05993015991bde548ab8b6d7ac.zip | |
PCI: Add pci_bus_set_ops
pci_bus_set_ops changes pci_ops associated with a pci_bus. This can be
used by debug tools such as PCIE AER error injection to fake some PCI
configuration registers.
Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/access.c')
| -rw-r--r-- | drivers/pci/access.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/pci/access.c b/drivers/pci/access.c index 0f3706512686..db23200c4874 100644 --- a/drivers/pci/access.c +++ b/drivers/pci/access.c @@ -66,6 +66,25 @@ EXPORT_SYMBOL(pci_bus_write_config_byte); EXPORT_SYMBOL(pci_bus_write_config_word); EXPORT_SYMBOL(pci_bus_write_config_dword); +/** + * pci_bus_set_ops - Set raw operations of pci bus + * @bus: pci bus struct + * @ops: new raw operations + * + * Return previous raw operations + */ +struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops) +{ + struct pci_ops *old_ops; + unsigned long flags; + + spin_lock_irqsave(&pci_lock, flags); + old_ops = bus->ops; + bus->ops = ops; + spin_unlock_irqrestore(&pci_lock, flags); + return old_ops; +} +EXPORT_SYMBOL(pci_bus_set_ops); /** * pci_read_vpd - Read one entry from Vital Product Data |