diff options
author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-04-02 20:58:47 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-04-03 22:42:46 +0300 |
commit | 43a7206b0963c2153c95d6985624d1dc1b3abd4d (patch) | |
tree | 60bcb1a3443249326a550c1fcf54ea7685c7ff01 | |
parent | 979207cac517833c828133ffb2633bcdf6edce00 (diff) | |
download | linux-43a7206b0963c2153c95d6985624d1dc1b3abd4d.tar.xz |
driver core: class: make class_register() take a const *
Now that the class code is cleaned up to not modify the class pointer
registered with it, change class_register() to take a const * to allow
the structure to be placed into read-only memory.
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/2023040248-customary-release-4aec@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/base/base.h | 2 | ||||
-rw-r--r-- | drivers/base/class.c | 6 | ||||
-rw-r--r-- | include/linux/device/class.h | 2 |
3 files changed, 5 insertions, 5 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h index e96f3343fd7c..eb4c0ace9242 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -54,7 +54,7 @@ struct subsys_private { struct device *dev_root; struct kset glue_dirs; - struct class *class; + const struct class *class; struct lock_class_key lock_key; }; diff --git a/drivers/base/class.c b/drivers/base/class.c index 53fc7052340c..05bce79d3d19 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -93,7 +93,7 @@ static ssize_t class_attr_store(struct kobject *kobj, struct attribute *attr, static void class_release(struct kobject *kobj) { struct subsys_private *cp = to_subsys_private(kobj); - struct class *class = cp->class; + const struct class *class = cp->class; pr_debug("class '%s': release.\n", class->name); @@ -110,7 +110,7 @@ static void class_release(struct kobject *kobj) static const struct kobj_ns_type_operations *class_child_ns_type(const struct kobject *kobj) { const struct subsys_private *cp = to_subsys_private(kobj); - struct class *class = cp->class; + const struct class *class = cp->class; return class->ns_type; } @@ -175,7 +175,7 @@ static void klist_class_dev_put(struct klist_node *n) put_device(dev); } -int class_register(struct class *cls) +int class_register(const struct class *cls) { struct subsys_private *cp; struct lock_class_key *key; diff --git a/include/linux/device/class.h b/include/linux/device/class.h index f3c418fa129a..4bf46f9bbb56 100644 --- a/include/linux/device/class.h +++ b/include/linux/device/class.h @@ -76,7 +76,7 @@ struct class_dev_iter { const struct device_type *type; }; -int __must_check class_register(struct class *class); +int __must_check class_register(const struct class *class); void class_unregister(const struct class *class); bool class_is_registered(const struct class *class); |