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oradax: make 'cl' a static const structure

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Now that the driver core allows for struct class to be in read-only
memory, move the 'cl' structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at load time.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: "Mike Rapoport (IBM)" <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Ivan Orlov <ivan.orlov0322@gmail.com>
Cc: sparclinux@vger.kernel.org
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://lore.kernel.org/r/20230620183446.684061-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ivan Orlov 2023-06-20 20:34:47 +02:00 committed by Greg Kroah-Hartman
parent fa50d6b8a5
commit 02fa4bcf4d
1 changed files with 10 additions and 11 deletions
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21
drivers/sbus/char/oradax.c
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@ -226,8 +226,10 @@ static int dax_ccb_info(u64 ca, struct ccb_info_result *info);
static int dax_ccb_kill(u64 ca, u16 *kill_res);
static struct cdev c_dev;
static struct class *cl;
static dev_t first;
static const struct class cl = {
.name = DAX_NAME,
};
static int max_ccb_version;
static int dax_debug;
@ -323,14 +325,11 @@ static int __init dax_attach(void)
goto done;
}
cl = class_create(DAX_NAME);
if (IS_ERR(cl)) {
dax_err("class_create failed");
ret = PTR_ERR(cl);
ret = class_register(&cl);
if (ret)
goto class_error;
}
if (device_create(cl, NULL, first, NULL, dax_name) == NULL) {
if (device_create(&cl, NULL, first, NULL, dax_name) == NULL) {
dax_err("device_create failed");
ret = -ENXIO;
goto device_error;
@ -347,9 +346,9 @@ static int __init dax_attach(void)
goto done;
cdev_error:
device_destroy(cl, first);
device_destroy(&cl, first);
device_error:
class_destroy(cl);
class_unregister(&cl);
class_error:
unregister_chrdev_region(first, 1);
done:
@ -362,8 +361,8 @@ static void __exit dax_detach(void)
{
pr_info("Cleaning up DAX module\n");
cdev_del(&c_dev);
device_destroy(cl, first);
class_destroy(cl);
device_destroy(&cl, first);
class_unregister(&cl);
unregister_chrdev_region(first, 1);
}
module_exit(dax_detach);