driver core: make driver_[create|remove]_file take a const *

The functions driver_create_file() and driver_remove_file() do not
modify the struct device_driver structure directly, so they are safe to
be marked as a constant pointer type.

Cc: "Rafael J. Wysocki" <[email protected]>
Link: https://lore.kernel.org/r/2024070844-volley-hatchling-c812@gregkh
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: gregkh

drivers/base/driver.c

@@ -173,7 +173,7 @@ EXPORT_SYMBOL_GPL(driver_find_device);
  * @drv: driver.
  * @attr: driver attribute descriptor.
  */
-int driver_create_file(struct device_driver *drv,
+int driver_create_file(const struct device_driver *drv,
 		       const struct driver_attribute *attr)
 {
 	int error;
@@ -191,7 +191,7 @@ EXPORT_SYMBOL_GPL(driver_create_file);
  * @drv: driver.
  * @attr: driver attribute descriptor.
  */
-void driver_remove_file(struct device_driver *drv,
+void driver_remove_file(const struct device_driver *drv,
 			const struct driver_attribute *attr)
 {
 	if (drv)

include/linux/device/driver.h

@@ -146,9 +146,9 @@ struct driver_attribute {
 #define DRIVER_ATTR_WO(_name) \
 	struct driver_attribute driver_attr_##_name = __ATTR_WO(_name)
 
-int __must_check driver_create_file(struct device_driver *driver,
+int __must_check driver_create_file(const struct device_driver *driver,
 				    const struct driver_attribute *attr);
-void driver_remove_file(struct device_driver *driver,
+void driver_remove_file(const struct device_driver *driver,
 			const struct driver_attribute *attr);
 
 int driver_set_override(struct device *dev, const char **override,