[PATCH v2 2/3] various: Remove unnecessary OBJECT() cast

[Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>]

The OBJECT() macro is defined as:

  #define OBJECT(obj) ((Object *)(obj))

which expands to:

  ((Object *)object_dynamic_cast_assert((Object *)(obj), (name),
                                        __FILE__, __LINE__, __func__))

This assertion can only fail when @obj points to something other
than its stated type, i.e. when we're in undefined behavior country.

Remove the unnecessary OBJECT() casts when we already know the
pointer is of Object type.

Patch created mechanically using spatch with this script:

  @@
  typedef Object;
  Object *o;
  @@
  -   OBJECT(o)
  +   o

Acked-by: Cornelia Huck <cohuck@xxxxxxxxxx>
Acked-by: Corey Minyard <cminyard@xxxxxxxxxx>
Acked-by: John Snow <jsnow@xxxxxxxxxx>
Reviewed-by: Richard Henderson <richard.henderson@xxxxxxxxxx>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>
---
v2: Reword (Markus)
---
 hw/core/bus.c                       | 2 +-
 hw/ide/ahci-allwinner.c             | 2 +-
 hw/ipmi/smbus_ipmi.c                | 2 +-
 hw/microblaze/petalogix_ml605_mmu.c | 8 ++++----
 hw/s390x/sclp.c                     | 2 +-
 monitor/misc.c                      | 3 +--
 qom/object.c                        | 4 ++--
 7 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/hw/core/bus.c b/hw/core/bus.c
index 3dc0a825f0..4ea5870de8 100644
--- a/hw/core/bus.c
+++ b/hw/core/bus.c
@@ -25,7 +25,7 @@
 
 void qbus_set_hotplug_handler(BusState *bus, Object *handler, Error **errp)
 {
-    object_property_set_link(OBJECT(bus), OBJECT(handler),
+    object_property_set_link(OBJECT(bus), handler,
                              QDEV_HOTPLUG_HANDLER_PROPERTY, errp);
 }
 
diff --git a/hw/ide/ahci-allwinner.c b/hw/ide/ahci-allwinner.c
index bb8393d2b6..8536b9eb5a 100644
--- a/hw/ide/ahci-allwinner.c
+++ b/hw/ide/ahci-allwinner.c
@@ -90,7 +90,7 @@ static void allwinner_ahci_init(Object *obj)
     SysbusAHCIState *s = SYSBUS_AHCI(obj);
     AllwinnerAHCIState *a = ALLWINNER_AHCI(obj);
 
-    memory_region_init_io(&a->mmio, OBJECT(obj), &allwinner_ahci_mem_ops, a,
+    memory_region_init_io(&a->mmio, obj, &allwinner_ahci_mem_ops, a,
                           "allwinner-ahci", ALLWINNER_AHCI_MMIO_SIZE);
     memory_region_add_subregion(&s->ahci.mem, ALLWINNER_AHCI_MMIO_OFF,
                                 &a->mmio);
diff --git a/hw/ipmi/smbus_ipmi.c b/hw/ipmi/smbus_ipmi.c
index 2a9470d9df..f1a0148755 100644
--- a/hw/ipmi/smbus_ipmi.c
+++ b/hw/ipmi/smbus_ipmi.c
@@ -329,7 +329,7 @@ static void smbus_ipmi_init(Object *obj)
 {
     SMBusIPMIDevice *sid = SMBUS_IPMI(obj);
 
-    ipmi_bmc_find_and_link(OBJECT(obj), (Object **) &sid->bmc);
+    ipmi_bmc_find_and_link(obj, (Object **) &sid->bmc);
 }
 
 static void smbus_ipmi_get_fwinfo(struct IPMIInterface *ii, IPMIFwInfo *info)
diff --git a/hw/microblaze/petalogix_ml605_mmu.c 
b/hw/microblaze/petalogix_ml605_mmu.c
index 0a2640c40b..52dcea9abd 100644
--- a/hw/microblaze/petalogix_ml605_mmu.c
+++ b/hw/microblaze/petalogix_ml605_mmu.c
@@ -150,9 +150,9 @@ petalogix_ml605_init(MachineState *machine)
     qdev_set_nic_properties(eth0, &nd_table[0]);
     qdev_prop_set_uint32(eth0, "rxmem", 0x1000);
     qdev_prop_set_uint32(eth0, "txmem", 0x1000);
-    object_property_set_link(OBJECT(eth0), OBJECT(ds),
+    object_property_set_link(OBJECT(eth0), ds,
                              "axistream-connected", &error_abort);
-    object_property_set_link(OBJECT(eth0), OBJECT(cs),
+    object_property_set_link(OBJECT(eth0), cs,
                              "axistream-control-connected", &error_abort);
     qdev_init_nofail(eth0);
     sysbus_mmio_map(SYS_BUS_DEVICE(eth0), 0, AXIENET_BASEADDR);
@@ -163,9 +163,9 @@ petalogix_ml605_init(MachineState *machine)
     cs = object_property_get_link(OBJECT(eth0),
                                   "axistream-control-connected-target", NULL);
     qdev_prop_set_uint32(dma, "freqhz", 100 * 1000000);
-    object_property_set_link(OBJECT(dma), OBJECT(ds),
+    object_property_set_link(OBJECT(dma), ds,
                              "axistream-connected", &error_abort);
-    object_property_set_link(OBJECT(dma), OBJECT(cs),
+    object_property_set_link(OBJECT(dma), cs,
                              "axistream-control-connected", &error_abort);
     qdev_init_nofail(dma);
     sysbus_mmio_map(SYS_BUS_DEVICE(dma), 0, AXIDMA_BASEADDR);
diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index ede056b3ef..4132286db7 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -322,7 +322,7 @@ void s390_sclp_init(void)
 
     object_property_add_child(qdev_get_machine(), TYPE_SCLP, new,
                               NULL);
-    object_unref(OBJECT(new));
+    object_unref(new);
     qdev_init_nofail(DEVICE(new));
 }
 
diff --git a/monitor/misc.c b/monitor/misc.c
index 6c45fa490f..57af5fa5a4 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -1839,8 +1839,7 @@ void object_add_completion(ReadLineState *rs, int 
nb_args, const char *str)
 static int qdev_add_hotpluggable_device(Object *obj, void *opaque)
 {
     GSList **list = opaque;
-    DeviceState *dev = (DeviceState *)object_dynamic_cast(OBJECT(obj),
-                                                          TYPE_DEVICE);
+    DeviceState *dev = (DeviceState *)object_dynamic_cast(obj, TYPE_DEVICE);
 
     if (dev == NULL) {
         return 0;
diff --git a/qom/object.c b/qom/object.c
index be700e831f..07c1443d0e 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -762,7 +762,7 @@ Object *object_new_with_propv(const char *typename,
         }
     }
 
-    object_unref(OBJECT(obj));
+    object_unref(obj);
     return obj;
 
  error:
@@ -1687,7 +1687,7 @@ void object_property_add_child(Object *obj, const char 
*name,
         return;
     }
 
-    type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child)));
+    type = g_strdup_printf("child<%s>", object_get_typename(child));
 
     op = object_property_add(obj, name, type, object_get_child_property, NULL,
                              object_finalize_child_property, child, 
&local_err);
-- 
2.21.3