driver core: class: mark class_release() as taking a const *

The struct class callback, class_release(), is only called in 2 places,
the pcmcia cardservices code, and in the class driver core code.  Both
places it is safe to mark the structure as a const *, to allow us to
in the future mark all struct class usages as constant and move into
read-only memory.

Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/2023040248-outrage-obsolete-5a9a@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/class.c b/drivers/base/class.c
index 65502bd..53fc705 100644 (file)
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -235,7 +235,7 @@ void class_unregister(const struct class *cls)
 }
 EXPORT_SYMBOL_GPL(class_unregister);
 
-static void class_create_release(struct class *cls)
+static void class_create_release(const struct class *cls)
 {
        pr_debug("%s called for %s\n", __func__, cls->name);
        kfree(cls);

diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
index e3224e4..5658745 100644 (file)
--- a/drivers/pcmcia/cs.c
+++ b/drivers/pcmcia/cs.c
@@ -824,7 +824,7 @@ static int pcmcia_socket_uevent(const struct device *dev,
 
 static struct completion pcmcia_unload;
 
-static void pcmcia_release_socket_class(struct class *data)
+static void pcmcia_release_socket_class(const struct class *data)
 {
        complete(&pcmcia_unload);
 }

diff --git a/include/linux/device/class.h b/include/linux/device/class.h
index 7e4a1a6..f3c418f 100644 (file)
--- a/include/linux/device/class.h
+++ b/include/linux/device/class.h
@@ -58,7 +58,7 @@ struct class {
        int (*dev_uevent)(const struct device *dev, struct kobj_uevent_env *env);
        char *(*devnode)(const struct device *dev, umode_t *mode);
 
-       void (*class_release)(struct class *class);
+       void (*class_release)(const struct class *class);
        void (*dev_release)(struct device *dev);
 
        int (*shutdown_pre)(struct device *dev);