Merge branch 'isdn-constify-struct-class-usage'

Ricardo B. Marliere says:

====================
isdn: constify struct class usage

This is a simple and straight forward cleanup series that aims to make the
class structures in isdn constant. This has been possible since 2023 [1].

[1]: https://lore.kernel.org/all/2023040248-customary-release-4aec@gregkh/
====================

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

2 files changed, 22 insertions, 15 deletions

diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 6e80d7bd3c4d..3ed257334562 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -49,7 +49,9 @@ MODULE_LICENSE("GPL");
 /* -------- driver information -------------------------------------- */
 
 static DEFINE_MUTEX(capi_mutex);
-static struct class *capi_class;
+static const struct class capi_class = {
+	.name = "capi",
+};
 static int capi_major = 68;		/* allocated */
 
 module_param_named(major, capi_major, uint, 0);
@@ -1393,18 +1395,19 @@ static int __init capi_init(void)
 		kcapi_exit();
 		return major_ret;
 	}
-	capi_class = class_create("capi");
-	if (IS_ERR(capi_class)) {
+
+	ret = class_register(&capi_class);
+	if (ret) {
 		unregister_chrdev(capi_major, "capi20");
 		kcapi_exit();
-		return PTR_ERR(capi_class);
+		return ret;
 	}
 
-	device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi20");
+	device_create(&capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi20");
 
 	if (capinc_tty_init() < 0) {
-		device_destroy(capi_class, MKDEV(capi_major, 0));
-		class_destroy(capi_class);
+		device_destroy(&capi_class, MKDEV(capi_major, 0));
+		class_unregister(&capi_class);
 		unregister_chrdev(capi_major, "capi20");
 		kcapi_exit();
 		return -ENOMEM;
@@ -1427,8 +1430,8 @@ static void __exit capi_exit(void)
 {
 	proc_exit();
 
-	device_destroy(capi_class, MKDEV(capi_major, 0));
-	class_destroy(capi_class);
+	device_destroy(&capi_class, MKDEV(capi_major, 0));
+	class_unregister(&capi_class);
 	unregister_chrdev(capi_major, "capi20");
 
 	capinc_tty_exit();
diff --git a/drivers/isdn/mISDN/dsp_pipeline.c b/drivers/isdn/mISDN/dsp_pipeline.c
index 09b72f14d4b7..b4ed0bb8ddfb 100644
--- a/drivers/isdn/mISDN/dsp_pipeline.c
+++ b/drivers/isdn/mISDN/dsp_pipeline.c
@@ -31,7 +31,9 @@ struct dsp_element_entry {
 static LIST_HEAD(dsp_elements);
 
 /* sysfs */
-static struct class *elements_class;
+static const struct class elements_class = {
+	.name = "dsp_pipeline",
+};
 
 static ssize_t
 attr_show_args(struct device *dev, struct device_attribute *attr, char *buf)
@@ -80,7 +82,7 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
 	INIT_LIST_HEAD(&entry->list);
 	entry->elem = elem;
 
-	entry->dev.class = elements_class;
+	entry->dev.class = &elements_class;
 	entry->dev.release = mISDN_dsp_dev_release;
 	dev_set_drvdata(&entry->dev, elem);
 	dev_set_name(&entry->dev, "%s", elem->name);
@@ -131,9 +133,11 @@ EXPORT_SYMBOL(mISDN_dsp_element_unregister);
 
 int dsp_pipeline_module_init(void)
 {
-	elements_class = class_create("dsp_pipeline");
-	if (IS_ERR(elements_class))
-		return PTR_ERR(elements_class);
+	int err;
+
+	err = class_register(&elements_class);
+	if (err)
+		return err;
 
 	dsp_hwec_init();
 
@@ -146,7 +150,7 @@ void dsp_pipeline_module_exit(void)
 
 	dsp_hwec_exit();
 
-	class_destroy(elements_class);
+	class_unregister(&elements_class);
 
 	list_for_each_entry_safe(entry, n, &dsp_elements, list) {
 		list_del(&entry->list);