hw/acpi: move object_resolve_type_unambiguous to core QOM

object_resolve_type_unambiguous provides a useful functionality, that
is currently emulated for example by usb_bus_find().  Move it to core
code and add error reporting for increased generality.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240223124406.234509-2-pbonzini@redhat.com>
[PMD: Fixed style]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

1 files changed, 5 insertions, 15 deletions

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index d3ce96dd9f..896ff87519 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -192,21 +192,10 @@ static void init_common_fadt_data(MachineState *ms, Object *o,
     *data = fadt;
 }
 
-static Object *object_resolve_type_unambiguous(const char *typename)
-{
-    bool ambig;
-    Object *o = object_resolve_path_type("", typename, &ambig);
-
-    if (ambig || !o) {
-        return NULL;
-    }
-    return o;
-}
-
 static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm)
 {
-    Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM);
-    Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE);
+    Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM, NULL);
+    Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE, NULL);
     Object *obj = piix ? piix : lpc;
     QObject *o;
     pm->cpu_hp_io_base = 0;
@@ -1428,8 +1417,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
            AcpiPmInfo *pm, AcpiMiscInfo *misc,
            Range *pci_hole, Range *pci_hole64, MachineState *machine)
 {
-    Object *i440fx = object_resolve_type_unambiguous(TYPE_I440FX_PCI_HOST_BRIDGE);
-    Object *q35 = object_resolve_type_unambiguous(TYPE_Q35_HOST_DEVICE);
+    Object *i440fx = object_resolve_type_unambiguous(TYPE_I440FX_PCI_HOST_BRIDGE,
+                                                     NULL);
+    Object *q35 = object_resolve_type_unambiguous(TYPE_Q35_HOST_DEVICE, NULL);
     CrsRangeEntry *entry;
     Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs;
     CrsRangeSet crs_range_set;