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virt: coco: change tsm_class to a const struct

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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 tsm_class to be a const struct class and drop the
class_create() call. Compile tested only.

Link: https://lore.kernel.org/all/2023040244-duffel-pushpin-f738@gregkh/

Changes with v1:
- Removed redundant int err variable.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jori Koolstra <jkoolstra@xs4all.nl>
Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://patch.msgid.link/20260306183325.245254-1-jkoolstra@xs4all.nl
Signed-off-by: Dan Williams <djbw@kernel.org>
This commit is contained in:
Jori Koolstra 2026-03-06 19:33:17 +01:00 committed by Dan Williams
parent f338e77383
commit 3177779ae1
1 changed files with 9 additions and 10 deletions
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19
drivers/virt/coco/tsm-core.c
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@ -9,7 +9,11 @@
#include <linux/cleanup.h>
#include <linux/pci-tsm.h>
static struct class *tsm_class;
static void tsm_release(struct device *);
static const struct class tsm_class = {
.name = "tsm",
.dev_release = tsm_release
};
static DEFINE_IDA(tsm_ida);
static int match_id(struct device *dev, const void *data)
@ -22,7 +26,7 @@ static int match_id(struct device *dev, const void *data)
struct tsm_dev *find_tsm_dev(int id)
{
struct device *dev = class_find_device(tsm_class, NULL, &id, match_id);
struct device *dev = class_find_device(&tsm_class, NULL, &id, match_id);
if (!dev)
return NULL;
@ -46,7 +50,7 @@ static struct tsm_dev *alloc_tsm_dev(struct device *parent)
tsm_dev->id = id;
dev = &tsm_dev->dev;
dev->parent = parent;
dev->class = tsm_class;
dev->class = &tsm_class;
device_initialize(dev);
return no_free_ptr(tsm_dev);
@ -114,18 +118,13 @@ static void tsm_release(struct device *dev)
static int __init tsm_init(void)
{
tsm_class = class_create("tsm");
if (IS_ERR(tsm_class))
return PTR_ERR(tsm_class);
tsm_class->dev_release = tsm_release;
return 0;
return class_register(&tsm_class);
}
module_init(tsm_init)
static void __exit tsm_exit(void)
{
class_destroy(tsm_class);
class_unregister(&tsm_class);
}
module_exit(tsm_exit)