[Qemu-devel] [RFC v3 33/35] pc: Eliminate empty or trivial compat functions

[Eduardo Habkost <ehabkost@redhat.com>]

When all a compat function does is to call the previous compat function,
we don't need to set compat_func, as the previous class_init function
already set it.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 hw/i386/pc_piix.c | 29 +----------------------------
 hw/i386/pc_q35.c  | 21 +--------------------
 2 files changed, 2 insertions(+), 48 deletions(-)

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 24bc59b..94e9dfe 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -279,29 +279,14 @@ static void pc_init1(MachineState *machine)
     }
 }
 
-static void pc_compat_2_0(MachineState *machine)
-{
-}
-
 static void pc_compat_1_7(MachineState *machine)
 {
-    pc_compat_2_0(machine);
     x86_cpu_compat_disable_kvm_features(FEAT_1_ECX, CPUID_EXT_X2APIC);
 }
 
-static void pc_compat_1_6(MachineState *machine)
-{
-    pc_compat_1_7(machine);
-}
-
-static void pc_compat_1_5(MachineState *machine)
-{
-    pc_compat_1_6(machine);
-}
-
 static void pc_compat_1_4(MachineState *machine)
 {
-    pc_compat_1_5(machine);
+    pc_compat_1_7(machine);
     x86_cpu_compat_set_features("n270", FEAT_1_ECX, 0, CPUID_EXT_MOVBE);
     x86_cpu_compat_set_features("Westmere", FEAT_1_ECX, 0, CPUID_EXT_PCLMULQDQ);
 }
@@ -312,19 +297,12 @@ static void pc_compat_1_3(MachineState *machine)
     enable_compat_apic_id_mode();
 }
 
-/* PC compat function for pc-0.14 to pc-1.2 */
 static void pc_compat_1_2(MachineState *machine)
 {
     pc_compat_1_3(machine);
     x86_cpu_compat_disable_kvm_features(FEAT_KVM, KVM_FEATURE_PV_EOI);
 }
 
-/* PC compat function for pc-0.10 to pc-0.13 */
-static void pc_compat_0_13(MachineState *machine)
-{
-    pc_compat_1_2(machine);
-}
-
 static void pc_compat_isa(MachineState *machine)
 {
     if (!machine->cpu_model) {
@@ -409,7 +387,6 @@ static void pc_i440fx_machine_v2_0_class_init(ObjectClass *oc, void *data)
     machine_class_add_compat_props(mc, compat_props);
     pcmc->smbios_legacy_mode = true;
     pcmc->has_reserved_memory = false;
-    pcmc->compat_func = pc_compat_2_0;
 }
 
 static const TypeInfo pc_i440fx_machine_v2_0_type_info = {
@@ -455,7 +432,6 @@ static void pc_i440fx_machine_v1_6_class_init(ObjectClass *oc, void *data)
     mc->rom_file_has_mr = false;
     machine_class_add_compat_props(mc, compat_props);
     pcmc->has_acpi_build = false;
-    pcmc->compat_func = pc_compat_1_6;
 }
 
 static const TypeInfo pc_i440fx_machine_v1_6_type_info = {
@@ -467,7 +443,6 @@ static const TypeInfo pc_i440fx_machine_v1_6_type_info = {
 static void pc_i440fx_machine_v1_5_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
-    PCMachineClass *pcmc = PC_MACHINE_CLASS(oc);
     static GlobalProperty compat_props[] = {
         PC_COMPAT_1_5,
         { /* end of list */ }
@@ -475,7 +450,6 @@ static void pc_i440fx_machine_v1_5_class_init(ObjectClass *oc, void *data)
     pc_i440fx_machine_v1_6_class_init(oc, data);
     mc->name = "pc-i440fx-1.5";
     machine_class_add_compat_props(mc, compat_props);
-    pcmc->compat_func = pc_compat_1_5;
 }
 
 static const TypeInfo pc_i440fx_machine_v1_5_type_info = {
@@ -775,7 +749,6 @@ static void pc_machine_v0_13_class_init(ObjectClass *oc, void *data)
     mc->hw_version = "0.13";
     mc->name = "pc-0.13";
     machine_class_add_compat_props(mc, compat_props);
-    pcmc->compat_func = pc_compat_0_13;
     pcmc->kvmclock_enabled = false;
 }
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 5ed9a16..d978567 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -263,29 +263,14 @@ static void pc_q35_init(MachineState *machine)
     }
 }
 
-static void pc_compat_2_0(MachineState *machine)
-{
-}
-
 static void pc_compat_1_7(MachineState *machine)
 {
-    pc_compat_2_0(machine);
     x86_cpu_compat_disable_kvm_features(FEAT_1_ECX, CPUID_EXT_X2APIC);
 }
 
-static void pc_compat_1_6(MachineState *machine)
-{
-    pc_compat_1_7(machine);
-}
-
-static void pc_compat_1_5(MachineState *machine)
-{
-    pc_compat_1_6(machine);
-}
-
 static void pc_compat_1_4(MachineState *machine)
 {
-    pc_compat_1_5(machine);
+    pc_compat_1_7(machine);
     x86_cpu_compat_set_features("n270", FEAT_1_ECX, 0, CPUID_EXT_MOVBE);
     x86_cpu_compat_set_features("Westmere", FEAT_1_ECX, 0, CPUID_EXT_PCLMULQDQ);
 }
@@ -338,7 +323,6 @@ static void pc_q35_machine_v2_0_class_init(ObjectClass *oc, void *data)
     mc->name = "pc-q35-2.0";
     pcmc->smbios_legacy_mode = true;
     pcmc->has_reserved_memory = false;
-    pcmc->compat_func = pc_compat_2_0;
 }
 
 static TypeInfo pc_q35_machine_v2_0_type_info = {
@@ -383,7 +367,6 @@ static void pc_q35_machine_v1_6_class_init(ObjectClass *oc, void *data)
     mc->rom_file_has_mr = false;
     machine_class_add_compat_props(mc, compat_props);
     mc->name = "pc-q35-1.6";
-    pcmc->compat_func = pc_compat_1_6;
     pcmc->has_acpi_build = false;
 }
 
@@ -396,7 +379,6 @@ static TypeInfo pc_q35_machine_v1_6_type_info = {
 static void pc_q35_machine_v1_5_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
-    PCMachineClass *pcmc = PC_MACHINE_CLASS(oc);
     static GlobalProperty compat_props[] = {
         PC_COMPAT_1_5,
         { /* end of list */ }
@@ -404,7 +386,6 @@ static void pc_q35_machine_v1_5_class_init(ObjectClass *oc, void *data)
     pc_q35_machine_v1_6_class_init(oc, data);
     machine_class_add_compat_props(mc, compat_props);
     mc->name = "pc-q35-1.5";
-    pcmc->compat_func = pc_compat_1_5;
 }
 
 static TypeInfo pc_q35_machine_v1_5_type_info = {
-- 
1.9.3