[PATCH] tools/xl: fix channel configuration setting

[Juergen Gross <jgross@xxxxxxxx>]

Channels work differently than other device types: their devid should
be -1 initially in order to distinguish them from the primary console
which has the devid of 0.

So when parsing the channel configuration, set devid explicitly to -1
after expanding the channels array, as this expansion of the array will
have set the devid to the index of the item in the array, overwriting
the -1 initialization done by libxl_device_channel_init().

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 tools/xl/xl_parse.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/xl/xl_parse.c b/tools/xl/xl_parse.c
index 3d85be7dd4..4705f6fd4b 100644
--- a/tools/xl/xl_parse.c
+++ b/tools/xl/xl_parse.c
@@ -2426,6 +2426,9 @@ void parse_config_data(const char *config_source,
             chn = ARRAY_EXTEND_INIT(d_config->channels, d_config->num_channels,
                                    libxl_device_channel_init);
 
+            /* ARRAY_EXTEND_INIT() has set the devid, but it must be -1. */
+            chn->devid = -1;
+
             split_string_into_string_list(buf, ",", &pairs);
             len = libxl_string_list_length(&pairs);
             for (i = 0; i < len; i++) {
-- 
2.43.0