[PATCH 17/55] isa: New isa_new(), isa_realize_and_unref() etc.

[Markus Armbruster <armbru@redhat.com>]

I'm converting from qdev_create()/qdev_init_nofail() to
qdev_new()/qdev_realize_and_unref(); recent commit "qdev: New
qdev_new(), qdev_realize(), etc." explains why.

ISA devices use qdev_create() through isa_create() and
isa_try_create().

Provide isa_new(), isa_try_new(), and isa_realize_and_unref() for
converting ISA devices.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 include/hw/isa/isa.h |  3 +++
 hw/isa/isa-bus.c     | 15 +++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/include/hw/isa/isa.h b/include/hw/isa/isa.h
index 02c2350274..3b6215fafe 100644
--- a/include/hw/isa/isa.h
+++ b/include/hw/isa/isa.h
@@ -105,6 +105,9 @@ MemoryRegion *isa_address_space(ISADevice *dev);
 MemoryRegion *isa_address_space_io(ISADevice *dev);
 ISADevice *isa_create(ISABus *bus, const char *name);
 ISADevice *isa_try_create(ISABus *bus, const char *name);
+ISADevice *isa_new(const char *name);
+ISADevice *isa_try_new(const char *name);
+bool isa_realize_and_unref(ISADevice *dev, ISABus *bus, Error **errp);
 ISADevice *isa_create_simple(ISABus *bus, const char *name);
 
 ISADevice *isa_vga_init(ISABus *bus);
diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c
index 1c9d7e19ab..e6412d39b4 100644
--- a/hw/isa/isa-bus.c
+++ b/hw/isa/isa-bus.c
@@ -176,6 +176,16 @@ ISADevice *isa_try_create(ISABus *bus, const char *name)
     return ISA_DEVICE(dev);
 }
 
+ISADevice *isa_new(const char *name)
+{
+    return ISA_DEVICE(qdev_new(name));
+}
+
+ISADevice *isa_try_new(const char *name)
+{
+    return ISA_DEVICE(qdev_try_new(name));
+}
+
 ISADevice *isa_create_simple(ISABus *bus, const char *name)
 {
     ISADevice *dev;
@@ -185,6 +195,11 @@ ISADevice *isa_create_simple(ISABus *bus, const char *name)
     return dev;
 }
 
+bool isa_realize_and_unref(ISADevice *dev, ISABus *bus, Error **errp)
+{
+    return qdev_realize_and_unref(&dev->parent_obj, &bus->parent_obj, errp);
+}
+
 ISADevice *isa_vga_init(ISABus *bus)
 {
     switch (vga_interface_type) {
-- 
2.21.1