Symbol: UPF_USR_MASK
drivers/tty/serial/serial_core.c
949
(((new_flags ^ old_flags) & ~UPF_USR_MASK) != 0))
drivers/tty/serial/serial_core.c
951
uport->flags = ((uport->flags & ~UPF_USR_MASK) |
drivers/tty/serial/serial_core.c
952
(new_flags & UPF_USR_MASK));