[PATCH] PCI: make pcie_port_bus_type const

[Ricardo B. Marliere]

Now that the driver core can properly handle constant struct bus_type,
move the pcie_port_bus_type variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Suggested-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ricardo B. Marliere <ricardo@xxxxxxxxxxxx>
---
 drivers/pci/pci-driver.c   | 2 +-
 drivers/pci/pcie/portdrv.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index ec838f2e892e..a29098e24683 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -1705,7 +1705,7 @@ static int pcie_port_bus_match(struct device *dev, struct device_driver *drv)
 	return 1;
 }
 
-struct bus_type pcie_port_bus_type = {
+const struct bus_type pcie_port_bus_type = {
 	.name		= "pci_express",
 	.match		= pcie_port_bus_match,
 };
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index 1f3803bde7ee..12c89ea0313b 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -96,7 +96,7 @@ struct pcie_port_service_driver {
 int pcie_port_service_register(struct pcie_port_service_driver *new);
 void pcie_port_service_unregister(struct pcie_port_service_driver *new);
 
-extern struct bus_type pcie_port_bus_type;
+extern const struct bus_type pcie_port_bus_type;
 
 struct pci_dev;
 

---
base-commit: cc24b2d080dca2ce1c89a8a71c00bdf21155f357
change-id: 20240208-bus_cleanup-pci2-61fe9c495d08

Best regards,
-- 
Ricardo B. Marliere <ricardo@xxxxxxxxxxxx>