svn commit: r217082 - releng/8.2/sys/dev/xen/console
Colin Percival
cperciva at FreeBSD.org
Thu Jan 6 22:54:50 UTC 2011
Author: cperciva
Date: Thu Jan 6 22:54:48 2011
New Revision: 217082
URL: http://svn.freebsd.org/changeset/base/217082
Log:
MFS r217053: Fix the Xen console to not spew \0 bytes when there is no
input available.
Approved by: re (rwatson)
Modified:
releng/8.2/sys/dev/xen/console/console.c
Directory Properties:
releng/8.2/sys/ (props changed)
releng/8.2/sys/amd64/include/xen/ (props changed)
releng/8.2/sys/cddl/contrib/opensolaris/ (props changed)
releng/8.2/sys/contrib/dev/acpica/ (props changed)
releng/8.2/sys/contrib/pf/ (props changed)
Modified: releng/8.2/sys/dev/xen/console/console.c
==============================================================================
--- releng/8.2/sys/dev/xen/console/console.c Thu Jan 6 22:53:55 2011 (r217081)
+++ releng/8.2/sys/dev/xen/console/console.c Thu Jan 6 22:54:48 2011 (r217082)
@@ -145,17 +145,18 @@ xccngetc(struct consdev *dev)
int
xccncheckc(struct consdev *dev)
{
- int ret = (xc_mute ? 0 : -1);
+ int ret;
if (xencons_has_input())
xencons_handle_input(NULL);
CN_LOCK(cn_mtx);
- if ((rp - rc)) {
+ if ((rp - rc) && !xc_mute) {
/* we need to return only one char */
ret = (int)rbuf[RBUF_MASK(rc)];
rc++;
- }
+ } else
+ ret = -1;
CN_UNLOCK(cn_mtx);
return(ret);
}
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