[src/trunk]: src/sys/dev/ic PR/48720: John Kelly: com driver does not allow B...

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

details:   https://anonhg.NetBSD.org/src/rev/50d16205e075
branches:  trunk
changeset: 328555:50d16205e075
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Apr 06 23:29:58 2014 +0000

description:
PR/48720: John Kelly: com driver does not allow B0 to be set. The code to
handle B0 was commented out for no reason given at revision 1.99. POSIX
mandates to hangup on B0:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/tcsetattr.html

diffstat:

 sys/dev/ic/com.c |  10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)

diffs (42 lines):

diff -r e7750eb3ee02 -r 50d16205e075 sys/dev/ic/com.c
--- a/sys/dev/ic/com.c  Sun Apr 06 19:51:39 2014 +0000
+++ b/sys/dev/ic/com.c  Sun Apr 06 23:29:58 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: com.c,v 1.323 2014/03/16 05:20:27 dholland Exp $ */
+/* $NetBSD: com.c,v 1.324 2014/04/06 23:29:58 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 1.323 2014/03/16 05:20:27 dholland Exp $");
+__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.324 2014/04/06 23:29:58 christos Exp $");
 
 #include "opt_com.h"
 #include "opt_ddb.h"
@@ -296,11 +296,9 @@
            divisor = 13;
        }
 
-#if 0
        if (speed == 0)
                return (0);
-#endif
-       if (speed <= 0)
+       if (speed < 0)
                return (-1);
        x = divrnd(frequency / divisor, speed);
        if (x <= 0)
@@ -1426,9 +1424,9 @@
        }
        sc->sc_msr_mask = sc->sc_msr_cts | sc->sc_msr_dcd;
 
-#if 0
        if (ospeed == 0)
                CLR(sc->sc_mcr, sc->sc_mcr_dtr);
+#if 0
        else
                SET(sc->sc_mcr, sc->sc_mcr_dtr);
 #endif