Commits
Alan Cox committed 8627b96dd80
tty_port: handle the nonblocking open of a dead port corner case Some drivers allow O_NDELAY of a dead port (eg for setserial to work). In that situation we must not try to raise the carrier. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>