diff options
| author | Ricardo B. Marliere <ricardo@marliere.net> | 2024-03-05 23:04:48 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-03-08 07:26:24 +0300 |
| commit | 12fbd67ea3f4d3308057f312047fd161e5670d21 (patch) | |
| tree | ec135366686a9b6301291860af8754fb10c91fba /drivers/isdn | |
| parent | 479b4bc867b9f7792a807f32118890d97609aeab (diff) | |
| download | linux-12fbd67ea3f4d3308057f312047fd161e5670d21.tar.xz | |
isdn: capi: make capi_class constant
Since commit 43a7206b0963 ("driver core: class: make class_register() take
a const *"), the driver core allows for struct class to be in read-only
memory, so move the capi_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240305-class_cleanup-isdn-v1-2-6f0edca75b61@marliere.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/isdn')
| -rw-r--r-- | drivers/isdn/capi/capi.c | 21 |
1 files changed, 12 insertions, 9 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(); |