forked from Minki/linux
PCI: Add devm_pci_alloc_host_bridge() interface
Struct pci_host_bridge can be allocated by PCI host bridge drivers which usually allocate and map memory through devm managed interfaces. Add a devm version for the pci_alloc_host_bridge() interface to simplify PCI host controller driver porting and simplify the driver failure paths. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Arnd Bergmann <arnd@arndb.de>
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@ -342,6 +342,7 @@ PER-CPU MEM
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devm_free_percpu()
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PCI
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devm_pci_alloc_host_bridge() : managed PCI host bridge allocation
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devm_pci_remap_cfgspace() : ioremap PCI configuration space
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devm_pci_remap_cfg_resource() : ioremap PCI configuration space resource
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pcim_enable_device() : after success, all PCI ops become managed
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@ -510,14 +510,18 @@ static struct pci_bus *pci_alloc_bus(struct pci_bus *parent)
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return b;
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}
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static void pci_release_host_bridge_dev(struct device *dev)
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static void devm_pci_release_host_bridge_dev(struct device *dev)
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{
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struct pci_host_bridge *bridge = to_pci_host_bridge(dev);
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if (bridge->release_fn)
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bridge->release_fn(bridge);
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}
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pci_free_host_bridge(bridge);
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static void pci_release_host_bridge_dev(struct device *dev)
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{
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devm_pci_release_host_bridge_dev(dev);
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pci_free_host_bridge(to_pci_host_bridge(dev));
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}
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struct pci_host_bridge *pci_alloc_host_bridge(size_t priv)
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@ -535,6 +539,22 @@ struct pci_host_bridge *pci_alloc_host_bridge(size_t priv)
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}
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EXPORT_SYMBOL(pci_alloc_host_bridge);
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struct pci_host_bridge *devm_pci_alloc_host_bridge(struct device *dev,
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size_t priv)
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{
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struct pci_host_bridge *bridge;
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bridge = devm_kzalloc(dev, sizeof(*bridge) + priv, GFP_KERNEL);
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if (!bridge)
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return NULL;
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INIT_LIST_HEAD(&bridge->windows);
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bridge->dev.release = devm_pci_release_host_bridge_dev;
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return bridge;
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}
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EXPORT_SYMBOL(devm_pci_alloc_host_bridge);
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void pci_free_host_bridge(struct pci_host_bridge *bridge)
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{
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pci_free_resource_list(&bridge->windows);
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@ -458,6 +458,8 @@ static inline struct pci_host_bridge *pci_host_bridge_from_priv(void *priv)
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}
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struct pci_host_bridge *pci_alloc_host_bridge(size_t priv);
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struct pci_host_bridge *devm_pci_alloc_host_bridge(struct device *dev,
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size_t priv);
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void pci_free_host_bridge(struct pci_host_bridge *bridge);
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int pci_register_host_bridge(struct pci_host_bridge *bridge);
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struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus);
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