PCI: Remove pci_scan_root_bus_msi()

The pci_scan_root_bus_bridge() function allows passing a parameterized
struct pci_host_bridge and scanning the resulting PCI bus; since the struct
msi_controller is part of the struct pci_host_bridge and the struct
pci_host_bridge can now be passed to pci_scan_root_bus_bridge() explicitly,
there is no need for a scan interface with a MSI controller parameter.

With all PCI host controller drivers and platform code relying on
pci_scan_root_bus_msi() converted over to pci_scan_root_bus_bridge() the
pci_scan_root_bus_msi() becomes obsolete and can be removed.

Signed-off-by: Lorenzo Pieralisi <[e-mail]>
Signed-off-by: Bjorn Helgaas <[e-mail]>

drivers/pci/probe.c

···
 {
 }
 
-static struct pci_bus *pci_create_root_bus_msi(struct device *parent,
-		int bus, struct pci_ops *ops, void *sysdata,
-		struct list_head *resources, struct msi_controller *msi)
+struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
+		struct pci_ops *ops, void *sysdata, struct list_head *resources)
 {
 	int error;
 	struct pci_host_bridge *bridge;
···
 	bridge->sysdata = sysdata;
 	bridge->busnr = bus;
 	bridge->ops = ops;
-	bridge->msi = msi;
 
 	error = pci_register_host_bridge(bridge);
 	if (error < 0)
···
 err_out:
 	kfree(bridge);
 	return NULL;
-}
-
-struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
-		struct pci_ops *ops, void *sysdata, struct list_head *resources)
-{
-	return pci_create_root_bus_msi(parent, bus, ops, sysdata, resources,
-				       NULL);
 }
 EXPORT_SYMBOL_GPL(pci_create_root_bus);
 
···
 }
 EXPORT_SYMBOL(pci_scan_root_bus_bridge);
 
-struct pci_bus *pci_scan_root_bus_msi(struct device *parent, int bus,
-		struct pci_ops *ops, void *sysdata,
-		struct list_head *resources, struct msi_controller *msi)
+struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
+		struct pci_ops *ops, void *sysdata, struct list_head *resources)
 {
 	struct resource_entry *window;
 	bool found = false;
···
 			break;
 		}
 
-	b = pci_create_root_bus_msi(parent, bus, ops, sysdata, resources, msi);
+	b = pci_create_root_bus(parent, bus, ops, sysdata, resources);
 	if (!b)
 		return NULL;
 
···
 		pci_bus_update_busn_res_end(b, max);
 
 	return b;
-}
-
-struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
-		struct pci_ops *ops, void *sysdata, struct list_head *resources)
-{
-	return pci_scan_root_bus_msi(parent, bus, ops, sysdata, resources,
-				     NULL);
 }
 EXPORT_SYMBOL(pci_scan_root_bus);
 

include/linux/pci.h

···
 int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax);
 int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax);
 void pci_bus_release_busn_res(struct pci_bus *b);
-struct pci_bus *pci_scan_root_bus_msi(struct device *parent, int bus,
-				      struct pci_ops *ops, void *sysdata,
-				      struct list_head *resources,
-				      struct msi_controller *msi);
 struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
 					     struct pci_ops *ops, void *sysdata,
 					     struct list_head *resources);