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PCI: cleanup pci_bus_add_devices()

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Cleanup pci_bus_add_devices() by negating the conditional and
continuing, rather than having a single conditional take up the whole
body.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Yu Zhao 2008-11-22 02:41:45 +08:00 committed by Jesse Barnes
parent 613e7ed6f7
commit 3fa16fdb48
1 changed files with 27 additions and 26 deletions
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53
drivers/pci/bus.c
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@ -71,7 +71,7 @@ pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
}
/**
* add a single device
* pci_bus_add_device - add a single device
* @dev: device to add
*
* This adds a single pci device to the global
@ -105,7 +105,7 @@ int pci_bus_add_device(struct pci_dev *dev)
void pci_bus_add_devices(struct pci_bus *bus)
{
struct pci_dev *dev;
struct pci_bus *child_bus;
struct pci_bus *child;
int retval;
list_for_each_entry(dev, &bus->devices, bus_list) {
@ -120,39 +120,40 @@ void pci_bus_add_devices(struct pci_bus *bus)
list_for_each_entry(dev, &bus->devices, bus_list) {
BUG_ON(!dev->is_added);
child = dev->subordinate;
/*
* If there is an unattached subordinate bus, attach
* it and then scan for unattached PCI devices.
*/
if (dev->subordinate) {
if (list_empty(&dev->subordinate->node)) {
down_write(&pci_bus_sem);
list_add_tail(&dev->subordinate->node,
&dev->bus->children);
up_write(&pci_bus_sem);
}
pci_bus_add_devices(dev->subordinate);
if (!child)
continue;
if (list_empty(&child->node)) {
down_write(&pci_bus_sem);
list_add_tail(&child->node, &dev->bus->children);
up_write(&pci_bus_sem);
}
pci_bus_add_devices(child);
/* register the bus with sysfs as the parent is now
* properly registered. */
child_bus = dev->subordinate;
if (child_bus->is_added)
continue;
child_bus->dev.parent = child_bus->bridge;
retval = device_register(&child_bus->dev);
if (retval)
dev_err(&dev->dev, "Error registering pci_bus,"
" continuing...\n");
else {
child_bus->is_added = 1;
retval = device_create_file(&child_bus->dev,
&dev_attr_cpuaffinity);
}
/*
* register the bus with sysfs as the parent is now
* properly registered.
*/
if (child->is_added)
continue;
child->dev.parent = child->bridge;
retval = device_register(&child->dev);
if (retval)
dev_err(&dev->dev, "Error registering pci_bus,"
" continuing...\n");
else {
child->is_added = 1;
retval = device_create_file(&child->dev,
&dev_attr_cpuaffinity);
if (retval)
dev_err(&dev->dev, "Error creating cpuaffinity"
" file, continuing...\n");
retval = device_create_file(&child_bus->dev,
retval = device_create_file(&child->dev,
&dev_attr_cpulistaffinity);
if (retval)
dev_err(&dev->dev,