[PATCH v3 11/18] hw/isa: Simplify isa_address_space[_io]()

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

We don't have any caller passing a NULL device argument,
so we can simplify, avoiding to access the global 'isabus'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/isa/isa-bus.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c
index 9c8224afa5..3036341d3b 100644
--- a/hw/isa/isa-bus.c
+++ b/hw/isa/isa-bus.c
@@ -252,20 +252,14 @@ static char *isabus_get_fw_dev_path(DeviceState *dev)
 
 MemoryRegion *isa_address_space(ISADevice *dev)
 {
-    if (dev) {
-        return isa_bus_from_device(dev)->address_space;
-    }
-
-    return isabus->address_space;
+    assert(dev);
+    return isa_bus_from_device(dev)->address_space;
 }
 
 MemoryRegion *isa_address_space_io(ISADevice *dev)
 {
-    if (dev) {
-        return isa_bus_from_device(dev)->address_space_io;
-    }
-
-    return isabus->address_space_io;
+    assert(dev);
+    return isa_bus_from_device(dev)->address_space_io;
 }
 
 type_init(isabus_register_types)
-- 
2.38.1