538 	struct cdevsw *dsw;  in devfs_allocv()  local
600 		dsw = dev->si_devsw;  in devfs_allocv()
601 		if (dsw != NULL && (dsw->d_flags & D_TTY) != 0)  in devfs_allocv()
687 	struct cdevsw *dsw;  in devfs_close()  local
742 	dsw = dev_refthread(dev, &ref);  in devfs_close()
743 	if (dsw == NULL)  in devfs_close()
755 	} else if (dsw->d_flags & D_TRACKCLOSE) {  in devfs_close()
768 	error = dsw->d_close(dev, ap->a_fflag | dflags, S_IFCHR, td);  in devfs_close()
916 	struct cdevsw *dsw;  in devfs_ioctl()  local
928 	dsw = devvn_refthread(vp, &dev, &ref);  in devfs_ioctl()
929 	if (dsw == NULL)  in devfs_ioctl()
936 		*(int *)ap->a_data = dsw->d_flags & D_TYPEMASK;  in devfs_ioctl()
952 		error = dsw->d_ioctl(dev, com, ap->a_data, ap->a_fflag, td);  in devfs_ioctl()
995 	struct cdevsw *dsw;  in devfs_kqfilter_f()  local
1002 	error = devfs_fp_check(fp, &dev, &dsw, &ref);  in devfs_kqfilter_f()
1005 	error = dsw->d_kqfilter(dev, kn);  in devfs_kqfilter_f()
1259 	struct cdevsw *dsw;  in devfs_open()  local
1272 	dsw = dev_refthread(dev, &ref);  in devfs_open()
1273 	if (dsw == NULL)  in devfs_open()
1275 	if (fp == NULL && dsw->d_fdopen != NULL) {  in devfs_open()
1292 	if (dsw->d_fdopen != NULL)  in devfs_open()
1293 		error = dsw->d_fdopen(dev, ap->a_mode, td, fp);  in devfs_open()
1295 		error = dsw->d_open(dev, ap->a_mode, S_IFCHR, td);  in devfs_open()
1383 	struct cdevsw *dsw;  in devfs_poll_f()  local
1388 	error = devfs_fp_check(fp, &dev, &dsw, &ref);  in devfs_poll_f()
1393 	error = dsw->d_poll(dev, events, td);  in devfs_poll_f()
1417 	struct cdevsw *dsw;  in devfs_read_f()  local
1423 	error = devfs_fp_check(fp, &dev, &dsw, &ref);  in devfs_read_f()
1434 	error = dsw->d_read(dev, uio, ioflag);  in devfs_read_f()
1923 	struct cdevsw *dsw;  in devfs_write_f()  local
1929 	error = devfs_fp_check(fp, &dev, &dsw, &ref);  in devfs_write_f()
1942 	error = dsw->d_write(dev, uio, ioflag);  in devfs_write_f()
1960 	struct cdevsw *dsw;  in devfs_mmap_f()  local
2008 	error = devfs_fp_check(fp, &dev, &dsw, &ref);  in devfs_mmap_f()
2012 	error = vm_mmap_cdev(td, size, prot, &maxprot, &flags, dev, dsw, &foff,  in devfs_mmap_f()