[Xen-changelog] [xen-unstable] libxl: remove QMP warning when no pty style serial device is configured

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1318499067 -3600
# Node ID a33af75083c7baddd3c9c6016657a83d239c6454
# Parent  8a817e804d6857ac96cdb71893953ce8e18ca84a
libxl: remove QMP warning when no pty style serial device is configured

If the serial device is not "pty" then there is nothing to do but this is not
an error. Removes a spurious warning if e.g. serial="file:/tmp/serial.log" is 
used:

libxl: error: libxl_qmp.c:137:register_serials_chardev_callback: Failed to 
store serial port information in xenstore: No such file or directory

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson.citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
---


diff -r 8a817e804d68 -r a33af75083c7 tools/libxl/libxl_qmp.c
--- a/tools/libxl/libxl_qmp.c   Thu Oct 13 10:32:09 2011 +0100
+++ b/tools/libxl/libxl_qmp.c   Thu Oct 13 10:44:27 2011 +0100
@@ -87,7 +87,7 @@
     int ret = 0;
 
     if (!(chardev && strncmp("pty:", chardev, 4) == 0)) {
-        return -1;
+        return 0;
     }
 
     path = libxl__xs_get_dompath(&gc, qmp->domid);

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