[src/trunk]: src/sys/dev/pckbport pckbd_cngetc: Set type=0 and return if no d...

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

details:   https://anonhg.NetBSD.org/src/rev/0c13f998147c
branches:  trunk
changeset: 457857:0c13f998147c
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Tue Jul 23 12:28:52 2019 +0000

description:
pckbd_cngetc: Set type=0 and return if no data is available

diffstat:

 sys/dev/pckbport/pckbd.c |  11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diffs (32 lines):

diff -r a0ecf8031370 -r 0c13f998147c sys/dev/pckbport/pckbd.c
--- a/sys/dev/pckbport/pckbd.c  Tue Jul 23 12:13:47 2019 +0000
+++ b/sys/dev/pckbport/pckbd.c  Tue Jul 23 12:28:52 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pckbd.c,v 1.33 2017/06/11 03:55:56 nat Exp $ */
+/* $NetBSD: pckbd.c,v 1.34 2019/07/23 12:28:52 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 1998, 2009 The NetBSD Foundation, Inc.
@@ -68,7 +68,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pckbd.c,v 1.33 2017/06/11 03:55:56 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pckbd.c,v 1.34 2019/07/23 12:28:52 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -1094,8 +1094,11 @@
 
        for (;;) {
                val = pckbport_poll_data(t->t_kbctag, t->t_kbcslot);
-               if (val == -1)
-                       continue;
+               if (val == -1) {
+                       *type = 0;
+                       *data = 0;
+                       return;
+               }
 
                val = pckbd_scancode_translate(t, val);
                if (val == 0)