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 <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

2 files changed, 5 insertions, 26 deletions

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 5c457c17cf5c..bd42ed42c199 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2324,9 +2324,8 @@ void __weak pcibios_remove_bus(struct pci_bus *bus)
 {
 }
 
-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;
@@ -2341,7 +2340,6 @@ static struct pci_bus *pci_create_root_bus_msi(struct device *parent,
         bridge->sysdata = sysdata;
         bridge->busnr = bus;
         bridge->ops = ops;
-        bridge->msi = msi;
 
         error = pci_register_host_bridge(bridge);
         if (error < 0)
@@ -2353,13 +2351,6 @@ 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);
 
 int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int bus_max)
@@ -2464,9 +2455,8 @@ int pci_scan_root_bus_bridge(struct pci_host_bridge *bridge)
 }
 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;
@@ -2479,7 +2469,7 @@ struct pci_bus *pci_scan_root_bus_msi(struct device *parent, int bus,
                         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;
 
@@ -2497,13 +2487,6 @@ struct pci_bus *pci_scan_root_bus_msi(struct device *parent, int bus,
 
         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);
 
 struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops,
diff --git a/include/linux/pci.h b/include/linux/pci.h
index b56dc13f47c2..9022b542556a 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -849,10 +849,6 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
 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);