173 	int retval = -ENODEV;  in if_ioctl()  local
185 		retval = -ENODEV;  in if_ioctl()
187 		retval = 0;  in if_ioctl()
190 			retval = get_user(int_arg, (int __user *) arg);  in if_ioctl()
191 			if (retval >= 0)  in if_ioctl()
192 				retval = if_lock(cs, &int_arg);  in if_ioctl()
193 			if (retval >= 0)  in if_ioctl()
194 				retval = put_user(int_arg, (int __user *) arg);  in if_ioctl()
197 			retval = get_user(int_arg, (int __user *) arg);  in if_ioctl()
198 			if (retval >= 0)  in if_ioctl()
199 				retval = if_config(cs, &int_arg);  in if_ioctl()
200 			if (retval >= 0)  in if_ioctl()
201 				retval = put_user(int_arg, (int __user *) arg);  in if_ioctl()
204 			retval = copy_from_user(&buf,  in if_ioctl()
207 			if (retval >= 0) {  in if_ioctl()
210 				retval = cs->ops->brkchars(cs, buf);  in if_ioctl()
214 			retval = copy_from_user(version,  in if_ioctl()
217 			if (retval >= 0)  in if_ioctl()
218 				retval = if_version(cs, version);  in if_ioctl()
219 			if (retval >= 0)  in if_ioctl()
220 				retval = copy_to_user((unsigned __user *) arg,  in if_ioctl()
227 			retval = -ENOIOCTLCMD;  in if_ioctl()
233 	return retval;  in if_ioctl()
239 	int retval;  in if_tiocmget()  local
246 	retval = cs->control_state & (TIOCM_RTS | TIOCM_DTR);  in if_tiocmget()
250 	return retval;  in if_tiocmget()
257 	int retval;  in if_tiocmset()  local
268 		retval = -ENODEV;  in if_tiocmset()
271 		retval = cs->ops->set_modem_ctrl(cs, cs->control_state, mc);  in if_tiocmset()
277 	return retval;  in if_tiocmset()
284 	int retval;  in if_write()  local
293 		retval = -ENODEV;  in if_write()
298 		retval = -EBUSY;  in if_write()
303 		retval = 0;  in if_write()
310 		retval = -ENOMEM;  in if_write()
319 	retval = cs->ops->write_cmd(cs, cb);  in if_write()
322 	return retval;  in if_write()
328 	int retval;  in if_write_room()  local
337 		retval = -ENODEV;  in if_write_room()
340 		retval = -EBUSY;  in if_write_room()
342 		retval = cs->ops->write_room(cs);  in if_write_room()
346 	return retval;  in if_write_room()
352 	int retval = 0;  in if_chars_in_buffer()  local
363 		retval = cs->ops->chars_in_buffer(cs);  in if_chars_in_buffer()
367 	return retval;  in if_chars_in_buffer()