driver core: device: make device_create*() take a const struct class *

The functions device_create() and device_create_with_groups() do not
modify the struct class passed into it, so enforce this by changing the
function parameters to be struct const class.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230313181843.1207845-12-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 0970db6..f1889b9 100644 (file)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -4253,7 +4253,7 @@ static void device_create_release(struct device *dev)
 }
 
 static __printf(6, 0) struct device *
-device_create_groups_vargs(struct class *class, struct device *parent,
+device_create_groups_vargs(const struct class *class, struct device *parent,
                           dev_t devt, void *drvdata,
                           const struct attribute_group **groups,
                           const char *fmt, va_list args)
@@ -4317,7 +4317,7 @@ error:
  * Note: the struct class passed to this function must have previously
  * been created with a call to class_create().
  */
-struct device *device_create(struct class *class, struct device *parent,
+struct device *device_create(const struct class *class, struct device *parent,
                             dev_t devt, void *drvdata, const char *fmt, ...)
 {
        va_list vargs;
@@ -4358,7 +4358,7 @@ EXPORT_SYMBOL_GPL(device_create);
  * Note: the struct class passed to this function must have previously
  * been created with a call to class_create().
  */
-struct device *device_create_with_groups(struct class *class,
+struct device *device_create_with_groups(const struct class *class,
                                         struct device *parent, dev_t devt,
                                         void *drvdata,
                                         const struct attribute_group **groups,

diff --git a/include/linux/device.h b/include/linux/device.h
index ea07b95..862397a 100644 (file)
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -1015,10 +1015,10 @@ bool device_is_bound(struct device *dev);
  * Easy functions for dynamically creating devices on the fly
  */
 __printf(5, 6) struct device *
-device_create(struct class *cls, struct device *parent, dev_t devt,
+device_create(const struct class *cls, struct device *parent, dev_t devt,
              void *drvdata, const char *fmt, ...);
 __printf(6, 7) struct device *
-device_create_with_groups(struct class *cls, struct device *parent, dev_t devt,
+device_create_with_groups(const struct class *cls, struct device *parent, dev_t devt,
                          void *drvdata, const struct attribute_group **groups,
                          const char *fmt, ...);
 void device_destroy(const struct class *cls, dev_t devt);