From: Robert Gerigk <Robert-Gerigk@online.de> When handle_bus_relations enumerates child devices via IRP_MN_QUERY_DEVICE_RELATIONS, store the parent's device instance ID as DEVPKEY_Device_Parent on each child device. This enables CM_Get_Parent to look up the parent device node through the standard device property mechanism. Signed-off-by: Jan Robert Gerigk <Robert-Gerigk@online.de> --- dlls/ntoskrnl.exe/pnp.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/dlls/ntoskrnl.exe/pnp.c b/dlls/ntoskrnl.exe/pnp.c index 56e378cf770..4bc7aa33af3 100644 --- a/dlls/ntoskrnl.exe/pnp.c +++ b/dlls/ntoskrnl.exe/pnp.c @@ -379,7 +379,7 @@ static void start_device( DEVICE_OBJECT *device, HDEVINFO set, SP_DEVINFO_DATA * create_dyn_data_key( device ); } -static void enumerate_new_device( DEVICE_OBJECT *device, HDEVINFO set ) +static void enumerate_new_device( DEVICE_OBJECT *device, HDEVINFO set, DEVICE_OBJECT *parent_device ) { static const WCHAR infpathW[] = {'I','n','f','P','a','t','h',0}; @@ -434,6 +434,13 @@ static void enumerate_new_device( DEVICE_OBJECT *device, HDEVINFO set ) ExFreePool( id ); } + { + WCHAR parent_id[MAX_DEVICE_ID_LEN]; + if (!get_device_instance_id( parent_device, parent_id )) + SetupDiSetDevicePropertyW( set, &sp_device, &DEVPKEY_Device_Parent, DEVPROP_TYPE_STRING, + (BYTE *)parent_id, (wcslen( parent_id ) + 1) * sizeof(WCHAR), 0 ); + } + if (need_driver && !install_device_driver( device, set, &sp_device ) && !caps.RawDeviceOK) { ERR("Unable to install a function driver for device %s.\n", debugstr_w(device_instance_id)); @@ -535,7 +542,7 @@ static void handle_bus_relations( DEVICE_OBJECT *parent ) if (!wine_parent->children || !device_in_list( wine_parent->children, child )) { TRACE("Adding new device %p.\n", child); - enumerate_new_device( child, set ); + enumerate_new_device( child, set, parent ); } } -- GitLab https://gitlab.winehq.org/wine/wine/-/merge_requests/10604