[Qemu-stable] [PATCH] hmp: fix block_set_io_throttle

[Eric Blake]

Commit 7a9877a made the 'device' parameter to BlockIOThrottle
optional, favoring 'id' instead.  But it forgot to update the
HMP usage to set has_device, which makes all attempts to change
throttling via HMP fail with "Need exactly one of 'device' and 'id'"

CC: address@hidden
Signed-off-by: Eric Blake <address@hidden>
---

 hmp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hmp.c b/hmp.c
index b869617..a3dc9d6 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1551,6 +1551,7 @@ void hmp_block_set_io_throttle(Monitor *mon, const QDict 
*qdict)
 {
     Error *err = NULL;
     BlockIOThrottle throttle = {
+        .has_device = true,
         .device = (char *) qdict_get_str(qdict, "device"),
         .bps = qdict_get_int(qdict, "bps"),
         .bps_rd = qdict_get_int(qdict, "bps_rd"),
-- 
2.9.3