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USB: mark all struct bus_type as const

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Now that the driver core can properly handle constant struct bus_type,
move all of the USB subsystem struct bus_type structures as const,
placing them into read-only memory which can not be modified at runtime.

Cc: Johan Hovold <johan@kernel.org>
Cc: Evan Green <evgreen@chromium.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-usb@vger.kernel.org
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230313182918.1312597-36-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-03-13 19:29:18 +01:00
parent d492cc2573
commit 9d11b13402
8 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/usb/common/ulpi.c
View File

@ -90,7 +90,7 @@ static void ulpi_remove(struct device *dev)
drv->remove(to_ulpi_dev(dev));
}
static struct bus_type ulpi_bus = {
static const struct bus_type ulpi_bus = {
.name = "ulpi",
.match = ulpi_match,
.uevent = ulpi_uevent,

2
drivers/usb/core/driver.c
View File

@ -2025,7 +2025,7 @@ int usb_disable_usb2_hardware_lpm(struct usb_device *udev)
#endif /* CONFIG_PM */
struct bus_type usb_bus_type = {
const struct bus_type usb_bus_type = {
.name = "usb",
.match = usb_device_match,
.uevent = usb_uevent,

2
drivers/usb/core/usb.h
View File

@ -140,7 +140,7 @@ static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev)
#endif
extern struct bus_type usb_bus_type;
extern const struct bus_type usb_bus_type;
extern struct mutex usb_port_peer_mutex;
extern struct device_type usb_device_type;
extern struct device_type usb_if_device_type;

4
drivers/usb/gadget/udc/core.c
View File

@ -26,7 +26,7 @@
static DEFINE_IDA(gadget_id_numbers);
static struct bus_type gadget_bus_type;
static const struct bus_type gadget_bus_type;
/**
* struct usb_udc - describes one usb device controller
@ -1747,7 +1747,7 @@ static int usb_udc_uevent(const struct device *dev, struct kobj_uevent_env *env)
return 0;
}
static struct bus_type gadget_bus_type = {
static const struct bus_type gadget_bus_type = {
.name = "gadget",
.probe = gadget_bind_driver,
.remove = gadget_unbind_driver,

2
drivers/usb/serial/bus.c
View File

@ -144,7 +144,7 @@ static void free_dynids(struct usb_serial_driver *drv)
spin_unlock(&drv->dynids.lock);
}
struct bus_type usb_serial_bus_type = {
const struct bus_type usb_serial_bus_type = {
.name = "usb-serial",
.match = usb_serial_device_match,
.probe = usb_serial_device_probe,

2
drivers/usb/typec/bus.c
View File

@ -431,7 +431,7 @@ static void typec_remove(struct device *dev)
adev->ops = NULL;
}
struct bus_type typec_bus = {
const struct bus_type typec_bus = {
.name = "typec",
.dev_groups = typec_groups,
.match = typec_match,

2
drivers/usb/typec/bus.h
View File

@ -28,7 +28,7 @@ struct altmode {
#define to_altmode(d) container_of(d, struct altmode, adev)
extern struct bus_type typec_bus;
extern const struct bus_type typec_bus;
extern const struct device_type typec_altmode_dev_type;
#define is_typec_altmode(_dev_) (_dev_->type == &typec_altmode_dev_type)

2
include/linux/usb/serial.h
View File

@ -378,7 +378,7 @@ void usb_serial_handle_dcd_change(struct usb_serial_port *usb_port,
int usb_serial_bus_register(struct usb_serial_driver *device);
void usb_serial_bus_deregister(struct usb_serial_driver *device);
extern struct bus_type usb_serial_bus_type;
extern const struct bus_type usb_serial_bus_type;
extern struct tty_driver *usb_serial_tty_driver;
static inline void usb_serial_debug_data(struct device *dev,