xref: /dflybsd-src/sys/dev/drm/linux_kobject.c (revision 1dedbd3b06c68f627b7825694444529d5eb2b1bf)

/*
 * Copyright (c) 2018-2019 François Tigeot <ftigeot@wolfpond.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <linux/gfp.h>
#include <linux/kobject.h>

int kobject_init_and_add(struct kobject *kobj, struct kobj_type *ktype,
			 struct kobject *parent, const char *fmt, ...)
{
	va_list ap;

	kobj->ktype = ktype;
	kref_init(&kobj->kref);

	va_start(ap, fmt);
	kobj->name = kvasprintf(M_WAITOK, fmt, ap);
	va_end(ap);

	return 0;
}

void kobject_release(struct kref *kref)
{
	struct kobject *kobj = container_of(kref, struct kobject, kref);

	if (kobj->ktype && kobj->ktype->release)
		kobj->ktype->release(kobj);
}