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| author | Ivan Orlov <ivan.orlov0322@gmail.com> | 2023-06-20 16:38:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-23 10:27:26 +0200 |
| commit | 9ee202e69e29470e3a0a2406493538378d4e9a85 (patch) | |
| tree | c8761ee96bf7c2005c93918c704cd74060183c1e /drivers/char | |
| parent | 936cb492a13e767c63b75ab84fd321682a18f9a5 (diff) | |
| download | linux-9ee202e69e29470e3a0a2406493538378d4e9a85.tar.gz | |
char: xillybus: make xillybus_class a static const structure
Now that the driver core allows for struct class to be in read-only
memory, move the xillybus_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at load time.
Cc: Eli Billauer <eli.billauer@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Acked-by: Eli Billauer <eli.billauer@gmail.com>
Link: https://lore.kernel.org/r/20230620143751.578239-18-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/xillybus/xillybus_class.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/drivers/char/xillybus/xillybus_class.c b/drivers/char/xillybus/xillybus_class.c index 89926fe9d8130..c92a628e389ee 100644 --- a/drivers/char/xillybus/xillybus_class.c +++ b/drivers/char/xillybus/xillybus_class.c @@ -23,7 +23,9 @@ MODULE_LICENSE("GPL v2"); static DEFINE_MUTEX(unit_mutex); static LIST_HEAD(unit_list); -static struct class *xillybus_class; +static const struct class xillybus_class = { + .name = "xillybus", +}; #define UNITNAMELEN 16 @@ -121,7 +123,7 @@ int xillybus_init_chrdev(struct device *dev, len -= namelen + 1; idt += namelen + 1; - device = device_create(xillybus_class, + device = device_create(&xillybus_class, NULL, MKDEV(unit->major, i + unit->lowest_minor), @@ -152,7 +154,7 @@ int xillybus_init_chrdev(struct device *dev, unroll_device_create: for (i--; i >= 0; i--) - device_destroy(xillybus_class, MKDEV(unit->major, + device_destroy(&xillybus_class, MKDEV(unit->major, i + unit->lowest_minor)); cdev_del(unit->cdev); @@ -193,7 +195,7 @@ void xillybus_cleanup_chrdev(void *private_data, for (minor = unit->lowest_minor; minor < (unit->lowest_minor + unit->num_nodes); minor++) - device_destroy(xillybus_class, MKDEV(unit->major, minor)); + device_destroy(&xillybus_class, MKDEV(unit->major, minor)); cdev_del(unit->cdev); @@ -242,19 +244,12 @@ EXPORT_SYMBOL(xillybus_find_inode); static int __init xillybus_class_init(void) { - xillybus_class = class_create("xillybus"); - - if (IS_ERR(xillybus_class)) { - pr_warn("Failed to register xillybus class\n"); - - return PTR_ERR(xillybus_class); - } - return 0; + return class_register(&xillybus_class); } static void __exit xillybus_class_exit(void) { - class_destroy(xillybus_class); + class_unregister(&xillybus_class); } module_init(xillybus_class_init); |