Date: Thu, 6 Jan 2011 22:54:49 +0000 (UTC) From: Colin Percival <cperciva@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r217082 - releng/8.2/sys/dev/xen/console Message-ID: <201101062254.p06MsnPE031416@svn.freebsd.org>
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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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