dibs: change dibs_class to a const struct

The class_create() call has been deprecated in favor of class_register()
as the driver core now allows for a struct class to be in read-only
memory. Change dibs_class to be a const struct class and drop the
class_create() call.

Link: https://lore.kernel.org/all/2023040244-duffel-pushpin-f738@gregkh/
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jori Koolstra <jkoolstra@xs4all.nl>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://patch.msgid.link/20260303163104.3749311-1-jkoolstra@xs4all.nl
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/dibs/dibs_main.c b/drivers/dibs/dibs_main.c
index f1816361b74d3d3278aaf051e8c464f7c4567dc8..14c3e2d84902e0fcb88766f8bd1315e462f02838 100644 (file)
--- a/drivers/dibs/dibs_main.c
+++ b/drivers/dibs/dibs_main.c
@@ -19,7 +19,9 @@
 MODULE_DESCRIPTION("Direct Internal Buffer Sharing class");
 MODULE_LICENSE("GPL");
 
-static struct class *dibs_class;
+static const struct class dibs_class = {
+       .name           = "dibs",
+};
 
 /* use an array rather a list for fast mapping: */
 static struct dibs_client *clients[MAX_DIBS_CLIENTS];
@@ -137,7 +139,7 @@ struct dibs_dev *dibs_dev_alloc(void)
        if (!dibs)
                return dibs;
        dibs->dev.release = dibs_dev_release;
-       dibs->dev.class = dibs_class;
+       dibs->dev.class = &dibs_class;
        device_initialize(&dibs->dev);
 
        return dibs;
@@ -253,9 +255,9 @@ static int __init dibs_init(void)
 {
        int rc;
 
-       dibs_class = class_create("dibs");
-       if (IS_ERR(dibs_class))
-               return PTR_ERR(dibs_class);
+       rc = class_register(&dibs_class);
+       if (rc)
+               return rc;
 
        rc = dibs_loopback_init();
        if (rc)
@@ -267,7 +269,7 @@ static int __init dibs_init(void)
 static void __exit dibs_exit(void)
 {
        dibs_loopback_exit();
-       class_destroy(dibs_class);
+       class_unregister(&dibs_class);
 }
 
 subsys_initcall(dibs_init);