[src/trunk]: src/sys/dev/ic PR/50395: Vicente Chaves de Melo: Loss of charact...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/972ad0d383c5
branches:  trunk
changeset: 811512:972ad0d383c5
user:      christos <christos%NetBSD.org@localhost>
date:      Mon Nov 02 17:45:13 2015 +0000

description:
PR/50395: Vicente Chaves de Melo: Loss of characters in serial port
communication between gdb and kgdb_stub: switch to line break interrupt
both when entering KGDB and also on shutdown so we can re-enter the debugger
with BREAK.

diffstat:

 sys/dev/ic/com.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (36 lines):

diff -r efa3cf36093e -r 972ad0d383c5 sys/dev/ic/com.c
--- a/sys/dev/ic/com.c  Mon Nov 02 17:40:20 2015 +0000
+++ b/sys/dev/ic/com.c  Mon Nov 02 17:45:13 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: com.c,v 1.336 2015/05/04 22:59:36 jmcneill Exp $ */
+/* $NetBSD: com.c,v 1.337 2015/11/02 17:45:13 christos Exp $ */
 
 /*-
  * Copyright (c) 1998, 1999, 2004, 2008 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.336 2015/05/04 22:59:36 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.337 2015/11/02 17:45:13 christos Exp $");
 
 #include "opt_com.h"
 #include "opt_ddb.h"
@@ -377,7 +377,7 @@
 {
 
        /* Turn on line break interrupt, set carrier. */
-       sc->sc_ier = IER_ERXRDY;
+       sc->sc_ier = IER_ERLS;
        if (sc->sc_type == COM_TYPE_PXA2x0)
                sc->sc_ier |= IER_EUART | IER_ERXTOUT;
        if (sc->sc_type == COM_TYPE_INGENIC ||
@@ -812,7 +812,7 @@
 
        /* Turn off interrupts. */
        if (ISSET(sc->sc_hwflags, COM_HW_CONSOLE)) {
-               sc->sc_ier = IER_ERXRDY; /* interrupt on break */
+               sc->sc_ier = IER_ERLS; /* interrupt on line break */
                if ((sc->sc_type == COM_TYPE_PXA2x0) ||
                    (sc->sc_type == COM_TYPE_INGENIC) ||
                    (sc->sc_type == COM_TYPE_TEGRA))