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driver core: class: remove subsystem private pointer from struct class

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Now that the last users of the subsystem private pointer in struct class
are gone, the pointer can be removed, as no one is using it.  One step
closer to allowing struct class to be const and moved into read-only
memory.

Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230331093318.82288-3-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-03-31 11:33:14 +02:00
parent 6f14c02220
commit 2df418cf4b
2 changed files with 0 additions and 6 deletions
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4
drivers/base/class.c
View File

@ -97,8 +97,6 @@ static void class_release(struct kobject *kobj)
pr_debug("class '%s': release.\n", class->name); pr_debug("class '%s': release.\n", class->name);
class->p = NULL;
if (class->class_release) if (class->class_release)
class->class_release(class); class->class_release(class);
else else
@ -206,7 +204,6 @@ int class_register(struct class *cls)
cp->subsys.kobj.kset = class_kset; cp->subsys.kobj.kset = class_kset;
cp->subsys.kobj.ktype = &class_ktype; cp->subsys.kobj.ktype = &class_ktype;
cp->class = cls; cp->class = cls;
cls->p = cp;
error = kset_register(&cp->subsys); error = kset_register(&cp->subsys);
if (error) if (error)
@ -222,7 +219,6 @@ int class_register(struct class *cls)
err_out: err_out:
kfree(cp); kfree(cp);
cls->p = NULL;
return error; return error;
} }
EXPORT_SYMBOL_GPL(class_register); EXPORT_SYMBOL_GPL(class_register);

2
include/linux/device/class.h
View File

@ -71,8 +71,6 @@ struct class {
void (*get_ownership)(const struct device *dev, kuid_t *uid, kgid_t *gid); void (*get_ownership)(const struct device *dev, kuid_t *uid, kgid_t *gid);
const struct dev_pm_ops *pm; const struct dev_pm_ops *pm;
struct subsys_private *p;
}; };
struct class_dev_iter { struct class_dev_iter {