.\" This manpage has been automatically generated by docbook2man 
.\" from a DocBook document.  This tool can be found at:
.\" <http://shell.ipoline.com/~elmert/comp/docbook2X/> 
.\" Please send any bug reports, improvements, comments, patches, 
.\" etc. to Steve Cheng <steve@ggi-project.org>.
.TH "TTY_LDISC_REF_WAIT" "9" "09 October 2005" "" ""

.SH NAME
tty_ldisc_ref_wait \- wait for the tty ldisc
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
struct tty_ldisc * tty_ldisc_ref_wait  (struct tty_struct * \fItty\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fItty\fB\fR
tty device
.SH "DESCRIPTION"
.PP
Dereference the line discipline for the terminal and take a 
reference to it. If the line discipline is in flux then 
wait patiently until it changes.
.SH "NOTE"
.PP
Must not be called from an IRQ/timer context. The caller
must also be careful not to hold other locks that will deadlock
against a discipline change, such as an existing ldisc reference
(which we check for)