balloon: Eliminate silly QERR_ macros The QERR_ macros are leftovers from the days of "rich" error objects. They're used with error_set() and qerror_report(), and expand into the first *two* arguments. This trickiness has become pointless. Clean up the balloon ones. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>

diff --git a/balloon.c b/balloon.c
index 728bb70..dea19a4 100644
--- a/balloon.c
+++ b/balloon.c

@@ -39,11 +39,13 @@
 static bool have_ballon(Error **errp)
 {
     if (kvm_enabled() && !kvm_has_sync_mmu()) {
-        error_set(errp, QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon");
+        error_set(errp, ERROR_CLASS_KVM_MISSING_CAP,
+                  "Using KVM without synchronous MMU, balloon unavailable");
         return false;
     }
     if (!balloon_event_fn) {
-        error_set(errp, QERR_DEVICE_NOT_ACTIVE, "balloon");
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE,
+                  "No balloon device has been activated");
         return false;
     }
     return true;

diff --git a/include/qapi/qmp/qerror.h b/include/qapi/qmp/qerror.h
index 28f980e..eeaf0cb 100644
--- a/include/qapi/qmp/qerror.h
+++ b/include/qapi/qmp/qerror.h

@@ -70,9 +70,6 @@
 #define QERR_DEVICE_NO_HOTPLUG \
     ERROR_CLASS_GENERIC_ERROR, "Device '%s' does not support hotplugging"
 
-#define QERR_DEVICE_NOT_ACTIVE \
-    ERROR_CLASS_DEVICE_NOT_ACTIVE, "No %s device has been activated"
-
 #define QERR_DEVICE_NOT_ENCRYPTED \
     ERROR_CLASS_GENERIC_ERROR, "Device '%s' is not encrypted"
 
@@ -109,9 +106,6 @@
 #define QERR_JSON_PARSING \
     ERROR_CLASS_GENERIC_ERROR, "Invalid JSON syntax"
 
-#define QERR_KVM_MISSING_CAP \
-    ERROR_CLASS_KVM_MISSING_CAP, "Using KVM without %s, %s unavailable"
-
 #define QERR_MIGRATION_ACTIVE \
     ERROR_CLASS_GENERIC_ERROR, "There's a migration process in progress"