The SpaprMachineClass::update_dt_enabled field was only used by the
pseries-3.1 machine, which got removed. Remove it as now unused.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/ppc/spapr.h | 1 -
 hw/ppc/spapr.c         | 9 ---------
 hw/ppc/spapr_hcall.c   | 5 -----
 3 files changed, 15 deletions(-)

diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index bc75e29084b..1db67784de8 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -143,7 +143,6 @@ struct SpaprMachineClass {
     MachineClass parent_class;
 
     /*< public >*/
-    bool update_dt_enabled;    /* enable KVMPPC_H_UPDATE_DT */
     bool pre_4_1_migration; /* don't migrate hpt-max-page-size */
     bool linux_pci_probe;
     bool smp_threads_vsmt; /* set VSMT to smp_threads by default */
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index b81eb7ffe73..feb1e78b7c0 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2052,13 +2052,6 @@ static const VMStateDescription vmstate_spapr_irq_map = {
     },
 };
 
-static bool spapr_dtb_needed(void *opaque)
-{
-    SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(opaque);
-
-    return smc->update_dt_enabled;
-}
-
 static int spapr_dtb_pre_load(void *opaque)
 {
     SpaprMachineState *spapr = (SpaprMachineState *)opaque;
@@ -2074,7 +2067,6 @@ static const VMStateDescription vmstate_spapr_dtb = {
     .name = "spapr_dtb",
     .version_id = 1,
     .minimum_version_id = 1,
-    .needed = spapr_dtb_needed,
     .pre_load = spapr_dtb_pre_load,
     .fields = (const VMStateField[]) {
         VMSTATE_UINT32(fdt_initial_size, SpaprMachineState),
@@ -4607,7 +4599,6 @@ static void spapr_machine_class_init(ObjectClass *oc, const void *data)
     hc->unplug_request = spapr_machine_device_unplug_request;
     hc->unplug = spapr_machine_device_unplug;
 
-    smc->update_dt_enabled = true;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power10_v2.0");
     mc->has_hotpluggable_cpus = true;
     mc->nvdimm_supported = true;
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c
index 8c1e0a4817b..8f03b3e7764 100644
--- a/hw/ppc/spapr_hcall.c
+++ b/hw/ppc/spapr_hcall.c
@@ -1475,16 +1475,11 @@ static target_ulong h_update_dt(PowerPCCPU *cpu, SpaprMachineState *spapr,
     target_ulong dt = ppc64_phys_to_real(args[0]);
     struct fdt_header hdr = { 0 };
     unsigned cb;
-    SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr);
     void *fdt;
 
     cpu_physical_memory_read(dt, &hdr, sizeof(hdr));
     cb = fdt32_to_cpu(hdr.totalsize);
 
-    if (!smc->update_dt_enabled) {
-        return H_SUCCESS;
-    }
-
     /* Check that the fdt did not grow out of proportion */
     if (cb > spapr->fdt_initial_size * 2) {
         trace_spapr_update_dt_failed_size(spapr->fdt_initial_size, cb,
-- 
2.51.0