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authorHuang Ying <ying.huang@intel.com>2009-04-24 06:45:17 +0400
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-06-17 01:29:33 +0400
commita72b46c3849cdb05993015991bde548ab8b6d7ac (patch)
treea782d4ab9c217792c9a8cefe48db9aebc0734dbe /drivers
parent1eb3948716f68bdb71509d0175765295f1aca23d (diff)
downloadlinux-a72b46c3849cdb05993015991bde548ab8b6d7ac.tar.xz
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')
-rw-r--r--drivers/pci/access.c19
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