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| author | Ricardo B. Marliere <ricardo@marliere.net> | 2024-03-05 14:25:24 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-03-13 11:23:50 +0300 |
| commit | 69460c5e6be063a85bb144845422776e0ffe8faa (patch) | |
| tree | 9806e5770eb3343b52421fdb69b7354742e7464f /drivers/s390 | |
| parent | c8fba0c11f180418c9e4e89353c7f29d7c9e1915 (diff) | |
| download | linux-69460c5e6be063a85bb144845422776e0ffe8faa.tar.xz | |
s390/raw3270: make class3270 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 class3270 structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Link: https://lore.kernel.org/r/20240305-class_cleanup-s390-v1-6-c4ff1ec49ffd@marliere.net
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/fs3270.c | 8 | ||||
| -rw-r--r-- | drivers/s390/char/raw3270.c | 12 | ||||
| -rw-r--r-- | drivers/s390/char/raw3270.h | 2 |
3 files changed, 12 insertions, 10 deletions
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c index ce1f3740068c..4d824f86bbbb 100644 --- a/drivers/s390/char/fs3270.c +++ b/drivers/s390/char/fs3270.c @@ -521,13 +521,13 @@ static const struct file_operations fs3270_fops = { static void fs3270_create_cb(int minor) { __register_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub", &fs3270_fops); - device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, minor), + device_create(&class3270, NULL, MKDEV(IBM_FS3270_MAJOR, minor), NULL, "3270/tub%d", minor); } static void fs3270_destroy_cb(int minor) { - device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, minor)); + device_destroy(&class3270, MKDEV(IBM_FS3270_MAJOR, minor)); __unregister_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub"); } @@ -546,7 +546,7 @@ static int __init fs3270_init(void) rc = __register_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270", &fs3270_fops); if (rc) return rc; - device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, 0), + device_create(&class3270, NULL, MKDEV(IBM_FS3270_MAJOR, 0), NULL, "3270/tub"); raw3270_register_notifier(&fs3270_notifier); return 0; @@ -555,7 +555,7 @@ static int __init fs3270_init(void) static void __exit fs3270_exit(void) { raw3270_unregister_notifier(&fs3270_notifier); - device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, 0)); + device_destroy(&class3270, MKDEV(IBM_FS3270_MAJOR, 0)); __unregister_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270"); } diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index 899e86e5a689..37173cb0f5f5 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -29,7 +29,9 @@ #include <linux/device.h> #include <linux/mutex.h> -struct class *class3270; +const struct class class3270 = { + .name = "3270", +}; EXPORT_SYMBOL(class3270); /* The main 3270 data structure. */ @@ -1318,9 +1320,9 @@ static int raw3270_init(void) rc = ccw_driver_register(&raw3270_ccw_driver); if (rc) return rc; - class3270 = class_create("3270"); - if (IS_ERR(class3270)) - return PTR_ERR(class3270); + rc = class_register(&class3270); + if (rc) + return rc; /* Create attributes for early (= console) device. */ mutex_lock(&raw3270_mutex); list_for_each_entry(rp, &raw3270_devices, list) { @@ -1334,7 +1336,7 @@ static int raw3270_init(void) static void raw3270_exit(void) { ccw_driver_unregister(&raw3270_ccw_driver); - class_destroy(class3270); + class_unregister(&class3270); } MODULE_LICENSE("GPL"); diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h index b1beecc7a0a9..5040c7e0e051 100644 --- a/drivers/s390/char/raw3270.h +++ b/drivers/s390/char/raw3270.h @@ -14,7 +14,7 @@ struct raw3270; struct raw3270_view; -extern struct class *class3270; +extern const struct class class3270; /* 3270 CCW request */ struct raw3270_request { |