PCI: Create alloc_pci_dev(), the one true way to create a struct pci_dev
There are currently several places in the kernel where we kmalloc() a struct pci_dev and start initialising it. It'd be preferable to have an allocator so we can ensure the pci_dev is correctly initialised in one place. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -846,6 +846,21 @@ static void pci_release_bus_bridge_dev(struct device *dev)
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kfree(dev);
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}
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struct pci_dev *alloc_pci_dev(void)
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{
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struct pci_dev *dev;
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dev = kzalloc(sizeof(struct pci_dev), GFP_KERNEL);
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if (!dev)
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return NULL;
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INIT_LIST_HEAD(&dev->global_list);
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INIT_LIST_HEAD(&dev->bus_list);
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return dev;
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}
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EXPORT_SYMBOL(alloc_pci_dev);
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/*
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* Read the config data for a PCI device, sanity-check it
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* and fill in the dev structure...
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@ -193,6 +193,8 @@ struct pci_dev {
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#endif
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};
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extern struct pci_dev *alloc_pci_dev(void);
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#define pci_dev_g(n) list_entry(n, struct pci_dev, global_list)
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#define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
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#define to_pci_dev(n) container_of(n, struct pci_dev, dev)
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