levelzero.h: fix the lookup of parent pci devices

L0 osdevs may have subdevices, hence the PCI parent isn't always the first parent.

Signed-off-by: Brice Goglin <[email protected]>
(cherry picked from commit 8bc2304)

Author: bgoglin

include/hwloc/levelzero.h

@@ -1,5 +1,5 @@
 /*
- * Copyright © 2021-2023 Inria.  All rights reserved.
+ * Copyright © 2021-2024 Inria.  All rights reserved.
  * See COPYING in top-level directory.
  */
 
@@ -131,11 +131,17 @@ hwloc_levelzero_get_device_osdev(hwloc_topology_t topology, ze_device_handle_t d
 
   osdev = NULL;
   while ((osdev = hwloc_get_next_osdev(topology, osdev)) != NULL) {
-    hwloc_obj_t pcidev = osdev->parent;
+    hwloc_obj_t pcidev;
 
     if (strncmp(osdev->name, "ze", 2))
       continue;
 
+    pcidev = osdev;
+    while (pcidev && pcidev->type != HWLOC_OBJ_PCI_DEVICE)
+      pcidev = pcidev->parent;
+    if (!pcidev)
+      continue;
+
     if (pcidev
       && pcidev->type == HWLOC_OBJ_PCI_DEVICE
       && pcidev->attr->pcidev.domain == pci.address.domain