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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Jul 2025 10:57:46.7022 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 77276ea8-546c-410d-4e82-08ddb88e1cf9 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF00004FBE.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB7780 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1751367494061116600 Content-Type: text/plain; charset="utf-8" Architectures that don't discover devices via DT may skip anything to do with device_t during the DT unflattening phase. Make device-tree.c stop requiring CONFIG_HAS_DEVICE_TREE_DISCOVERY so it may function with CONFIG_DEVICE_TREE_PARSE alone. This allows CONFIG_DEVICE_TREE_PARSE to unflatten a DT ignoring its devices if CONFIG_HAS_DEVICE_TREE_DISCOVERY is not selected. Signed-off-by: Alejandro Vallejo Reviewed-by: Stefano Stabellini --- v5: * New commit message to make it more general --- xen/common/device-tree/device-tree.c | 2 ++ xen/include/xen/device_tree.h | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/xen/common/device-tree/device-tree.c b/xen/common/device-tree/= device-tree.c index 725ff71646..741e2ce585 100644 --- a/xen/common/device-tree/device-tree.c +++ b/xen/common/device-tree/device-tree.c @@ -2029,9 +2029,11 @@ static unsigned long unflatten_dt_node(const void *f= dt, ((char *)pp->value)[sz - 1] =3D 0; dt_dprintk("fixed up name for %s -> %s\n", pathp, (char *)pp->value); +#ifdef CONFIG_HAS_DEVICE_TREE_DISCOVERY /* Generic device initialization */ np->dev.type =3D DEV_DT; np->dev.of_node =3D np; +#endif /* CONFIG_HAS_DEVICE_TREE_DISCOVERY */ } } if ( allnextpp ) diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h index b6d16756fc..ace7fc3274 100644 --- a/xen/include/xen/device_tree.h +++ b/xen/include/xen/device_tree.h @@ -108,9 +108,12 @@ struct dt_device_node { */ struct list_head domain_list; =20 +#ifdef CONFIG_HAS_DEVICE_TREE_DISCOVERY struct device dev; +#endif /* CONFIG_HAS_DEVICE_TREE_DISCOVERY */ }; =20 +#ifdef CONFIG_HAS_DEVICE_TREE_DISCOVERY #define dt_to_dev(dt_node) (&(dt_node)->dev) =20 static inline struct dt_device_node *dev_to_dt(struct device *dev) @@ -119,6 +122,7 @@ static inline struct dt_device_node *dev_to_dt(struct d= evice *dev) =20 return container_of(dev, struct dt_device_node, dev); } +#endif /* CONFIG_HAS_DEVICE_TREE_DISCOVERY */ =20 #define MAX_PHANDLE_ARGS 16 struct dt_phandle_args { --=20 2.43.0