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pps: Reserve a line discipline number for PPS

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Add a new line discipline for "pulse per second" devices connected to
a serial port.

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox 2008-10-13 10:37:17 +01:00 committed by Linus Torvalds
parent 9e48565d21
commit 348eb12e55
1 changed files with 2 additions and 1 deletions
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3
include/linux/tty.h
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@ -23,7 +23,7 @@
*/
#define NR_UNIX98_PTY_DEFAULT 4096 /* Default maximum for Unix98 ptys */
#define NR_UNIX98_PTY_MAX (1 << MINORBITS) /* Absolute limit */
#define NR_LDISCS 18
#define NR_LDISCS 19
/* line disciplines */
#define N_TTY 0
@ -45,6 +45,7 @@
#define N_HCI 15 /* Bluetooth HCI UART */
#define N_GIGASET_M101 16 /* Siemens Gigaset M101 serial DECT adapter */
#define N_SLCAN 17 /* Serial / USB serial CAN Adaptors */
#define N_PPS 18 /* Pulse per Second */
/*
* This character is the same as _POSIX_VDISABLE: it cannot be used as