[PATCH] PCI: Small rearrangement of PCI probing code
This patch makes some small rearrangements of the PCI probing code in
order to make it possible for arch code to set up the PCI tree
without needing to duplicate code from the PCI layer unnecessarily.
PPC64 will use this to set up the PCI tree from the Open Firmware
device tree, which we need to do on logically-partitioned pSeries
systems.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index b9c9b03..35caec1 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -753,6 +753,12 @@
kfree(dev);
return NULL;
}
+
+ return dev;
+}
+
+void __devinit pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
+{
device_initialize(&dev->dev);
dev->dev.release = pci_release_dev;
pci_dev_get(dev);
@@ -760,20 +766,6 @@
dev->dev.dma_mask = &dev->dma_mask;
dev->dev.coherent_dma_mask = 0xffffffffull;
- return dev;
-}
-
-struct pci_dev * __devinit
-pci_scan_single_device(struct pci_bus *bus, int devfn)
-{
- struct pci_dev *dev;
-
- dev = pci_scan_device(bus, devfn);
- pci_scan_msi_device(dev);
-
- if (!dev)
- return NULL;
-
/* Fix up broken headers */
pci_fixup_device(pci_fixup_header, dev);
@@ -785,6 +777,19 @@
spin_lock(&pci_bus_lock);
list_add_tail(&dev->bus_list, &bus->devices);
spin_unlock(&pci_bus_lock);
+}
+
+struct pci_dev * __devinit
+pci_scan_single_device(struct pci_bus *bus, int devfn)
+{
+ struct pci_dev *dev;
+
+ dev = pci_scan_device(bus, devfn);
+ if (!dev)
+ return NULL;
+
+ pci_device_add(dev, bus);
+ pci_scan_msi_device(dev);
return dev;
}
@@ -881,7 +886,8 @@
return max;
}
-struct pci_bus * __devinit pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata)
+struct pci_bus * __devinit pci_create_bus(struct device *parent,
+ int bus, struct pci_ops *ops, void *sysdata)
{
int error;
struct pci_bus *b;
@@ -938,8 +944,6 @@
b->resource[0] = &ioport_resource;
b->resource[1] = &iomem_resource;
- b->subordinate = pci_scan_child_bus(b);
-
return b;
sys_create_link_err:
@@ -957,6 +961,18 @@
kfree(b);
return NULL;
}
+EXPORT_SYMBOL_GPL(pci_create_bus);
+
+struct pci_bus * __devinit pci_scan_bus_parented(struct device *parent,
+ int bus, struct pci_ops *ops, void *sysdata)
+{
+ struct pci_bus *b;
+
+ b = pci_create_bus(parent, bus, ops, sysdata);
+ if (b)
+ b->subordinate = pci_scan_child_bus(b);
+ return b;
+}
EXPORT_SYMBOL(pci_scan_bus_parented);
#ifdef CONFIG_HOTPLUG