[PATCH] spapr: DRC lookup cannot fail

[Greg Kurz]

All memory DRC objects are created during machine init. It is thus safe
to assume spapr_drc_by_id() cannot return NULL when hot-plug/unplugging
memory.

Make this clear with an assertion, like the code already does a few lines
above when looping over memory DRCs. This fixes Coverity reports 1437757
and 1437758.

Signed-off-by: Greg Kurz <groug@kaod.org>
---
 hw/ppc/spapr.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index dee48a0043bb..c283ff639040 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -3424,6 +3424,7 @@ static void spapr_add_lmbs(DeviceState *dev, uint64_t 
addr_start, uint64_t size,
         if (dedicated_hp_event_source) {
             drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB,
                                   addr_start / SPAPR_MEMORY_BLOCK_SIZE);
+            g_assert(drc);
             spapr_hotplug_req_add_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB,
                                                    nr_lmbs,
                                                    spapr_drc_index(drc));
@@ -3664,6 +3665,7 @@ static void spapr_memory_unplug_request(HotplugHandler 
*hotplug_dev,
 
     drc = spapr_drc_by_id(TYPE_SPAPR_DRC_LMB,
                           addr_start / SPAPR_MEMORY_BLOCK_SIZE);
+    g_assert(drc);
     spapr_hotplug_req_remove_by_count_indexed(SPAPR_DR_CONNECTOR_TYPE_LMB,
                                               nr_lmbs, spapr_drc_index(drc));
 }