108 static void linux_cdev_deref(struct linux_cdev *ldev);
715 	struct linux_cdev *ldev;  in linux_get_fop()  local
718 	ldev = filp->f_cdev;  in linux_get_fop()
720 	if (ldev != NULL) {  in linux_get_fop()
721 		for (siref = ldev->siref;;) {  in linux_get_fop()
723 				ldev = &dummy_ldev;  in linux_get_fop()
724 				siref = ldev->siref;  in linux_get_fop()
725 				*fop = ldev->ops;  in linux_get_fop()
726 				MPASS((ldev->siref & LDEV_SI_DTR) == 0);  in linux_get_fop()
727 			} else if (atomic_fcmpset_int(&ldev->siref, &siref,  in linux_get_fop()
733 	*dev = ldev;  in linux_get_fop()
737 linux_drop_fop(struct linux_cdev *ldev)  in linux_drop_fop()  argument
740 	if (ldev == NULL)  in linux_drop_fop()
742 	MPASS((ldev->siref & ~LDEV_SI_DTR) != 0);  in linux_drop_fop()
743 	atomic_subtract_int(&ldev->siref, LDEV_SI_REF);  in linux_drop_fop()
761 	struct linux_cdev *ldev;  in linux_dev_fdopen()  local
766 	ldev = dev->si_drv1;  in linux_dev_fdopen()
770 	filp->f_op = ldev->ops;  in linux_dev_fdopen()
775 	refcount_acquire(&ldev->refs);  in linux_dev_fdopen()
776 	filp->f_cdev = ldev;  in linux_dev_fdopen()
779 	linux_get_fop(filp, &fop, &ldev);  in linux_dev_fdopen()
784 			linux_drop_fop(ldev);  in linux_dev_fdopen()
796 	linux_drop_fop(ldev);  in linux_dev_fdopen()
1150 	struct linux_cdev *ldev;  in linux_file_kqfilter_poll()  local
1158 	linux_get_fop(filp, &fop, &ldev);  in linux_file_kqfilter_poll()
1161 	linux_drop_fop(ldev);  in linux_file_kqfilter_poll()
1390 	struct linux_cdev *ldev;  in linux_file_read()  local
1403 	linux_get_fop(filp, &fop, &ldev);  in linux_file_read()
1421 	linux_drop_fop(ldev);  in linux_file_read()
1432 	struct linux_cdev *ldev;  in linux_file_write()  local
1444 	linux_get_fop(filp, &fop, &ldev);  in linux_file_write()
1464 	linux_drop_fop(ldev);  in linux_file_write()
1475 	struct linux_cdev *ldev;  in linux_file_poll()  local
1481 	linux_get_fop(filp, &fop, &ldev);  in linux_file_poll()
1488 	linux_drop_fop(ldev);  in linux_file_poll()
1497 	struct linux_cdev *ldev;  in linux_file_close()  local
1512 	linux_get_fop(filp, &fop, &ldev);  in linux_file_close()
1518 	linux_drop_fop(ldev);  in linux_file_close()
1532 	struct linux_cdev *ldev;  in linux_file_ioctl()  local
1538 	linux_get_fop(filp, &fop, &ldev);  in linux_file_ioctl()
1565 	linux_drop_fop(ldev);  in linux_file_ioctl()
1595 	struct linux_cdev *ldev;  in linux_file_mmap()  local
1642 	linux_get_fop(filp, &fop, &ldev);  in linux_file_mmap()
1653 	linux_drop_fop(ldev);  in linux_file_mmap()
1705 	struct linux_cdev *ldev;  in linux_iminor()  local
1710 	ldev = inode->v_rdev->si_drv1;  in linux_iminor()
1711 	if (ldev == NULL)  in linux_iminor()
1714 	return (minor(ldev->dev));  in linux_iminor()
2084 linux_cdev_deref(struct linux_cdev *ldev)  in linux_cdev_deref()  argument
2087 	if (refcount_release(&ldev->refs))  in linux_cdev_deref()
2088 		kfree(ldev);  in linux_cdev_deref()
2117 linux_destroy_dev(struct linux_cdev *ldev)  in linux_destroy_dev()  argument
2120 	if (ldev->cdev == NULL)  in linux_destroy_dev()
2123 	MPASS((ldev->siref & LDEV_SI_DTR) == 0);  in linux_destroy_dev()
2124 	atomic_set_int(&ldev->siref, LDEV_SI_DTR);  in linux_destroy_dev()
2125 	while ((atomic_load_int(&ldev->siref) & ~LDEV_SI_DTR) != 0)  in linux_destroy_dev()
2128 	destroy_dev(ldev->cdev);  in linux_destroy_dev()
2129 	ldev->cdev = NULL;  in linux_destroy_dev()
2325 		struct linux_cdev *ldev = cdev->si_drv1;  in linux_find_cdev()  local
2326 		if (ldev->dev == dev &&  in linux_find_cdev()
2327 		    strcmp(kobject_name(&ldev->kobj), name) == 0) {  in linux_find_cdev()