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PCI: Make device create/destroy logic symmetric

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According to device model documentation, the way to create/destroy PCI
devices should be symmetric.  The rule is to either use
  1) device_register()/device_unregister()
or
  2) device_initialize()/device_add()/device_del()/put_device().

So change PCI core logic to follow the rule and get rid of the redundant
pci_dev_get()/pci_dev_put() pair.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Jiang Liu 2013-01-21 13:20:46 -08:00 committed by Bjorn Helgaas
parent d5af7d987a
commit e723f0b4f4
2 changed files with 2 additions and 3 deletions
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1
drivers/pci/probe.c
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@ -1298,7 +1298,6 @@ void 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);
set_dev_node(&dev->dev, pcibus_to_node(bus));
dev->dev.dma_mask = &dev->dma_mask;

4
drivers/pci/remove.c
View file

@ -22,7 +22,7 @@ static void pci_stop_dev(struct pci_dev *dev)
if (dev->is_added) {
pci_proc_detach_device(dev);
pci_remove_sysfs_dev_files(dev);
device_unregister(&dev->dev);
device_del(&dev->dev);
dev->is_added = 0;
}
@ -37,7 +37,7 @@ static void pci_destroy_dev(struct pci_dev *dev)
up_write(&pci_bus_sem);
pci_free_resources(dev);
pci_dev_put(dev);
put_device(&dev->dev);
}
void pci_remove_bus(struct pci_bus *bus)