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.TH "TTY_LDISC_REF" "9" "09 October 2005" "" ""

.SH NAME
tty_ldisc_ref \- get the tty ldisc
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
struct tty_ldisc * tty_ldisc_ref  (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 
return NULL. Can be called from IRQ and timer functions.