From: Niklas Cassel <[email protected]>

Each NvmeNamespace can be used by serveral controllers,
but a NvmeNamespace can at most belong to a single NvmeSubsystem.
Store a pointer to the NvmeSubsystem, if the namespace was realized
with a NvmeSubsystem.

Reviewed-by: Keith Busch <[email protected]>
Signed-off-by: Niklas Cassel <[email protected]>
Signed-off-by: Klaus Jensen <[email protected]>
---
 hw/nvme/ns.c   | 1 +
 hw/nvme/nvme.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index 62a1f97be010..8ebab4fbceaf 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -561,6 +561,7 @@ static void nvme_ns_realize(DeviceState *dev, Error **errp)
         if (!qdev_set_parent_bus(dev, &subsys->bus.parent_bus, errp)) {
             return;
         }
+        ns->subsys = subsys;
     }
 
     if (nvme_ns_setup(ns, errp)) {
diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index 16da27a69bfb..5d221073ac68 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -167,6 +167,7 @@ typedef struct NvmeNamespace {
     int32_t         nr_active_zones;
 
     NvmeNamespaceParams params;
+    NvmeSubsystem *subsys;
 
     struct {
         uint32_t err_rec;
-- 
2.39.2


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