fdc: Open-code fdctrl_init_isa()

Helper function fdctrl_init_isa() is less than helpful: one of three
places creating "isa-fdc" devices use it.  Open-code it there, and
drop the function.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200622094227.1271650-6-armbru@redhat.com>

hw/block/fdc.c

@@ -2565,20 +2565,6 @@ static void fdctrl_connect_drives(FDCtrl *fdctrl, DeviceState *fdc_dev,
     }
 }
 
-ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds)
-{
-    ISADevice *isadev;
-
-    isadev = isa_try_new(TYPE_ISA_FDC);
-    if (!isadev) {
-        return NULL;
-    }
-    isa_realize_and_unref(isadev, bus, &error_fatal);
-
-    isa_fdc_init_drives(isadev, fds);
-    return isadev;
-}
-
 void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
                         hwaddr mmio_base, DriveInfo **fds)
 {

hw/i386/pc.c

@@ -1142,7 +1142,7 @@ static void pc_superio_init(ISABus *isa_bus, bool create_fdctrl, bool no_vmport)
     int i;
     DriveInfo *fd[MAX_FD];
     qemu_irq *a20_line;
-    ISADevice *i8042, *port92, *vmmouse;
+    ISADevice *fdc, *i8042, *port92, *vmmouse;
 
     serial_hds_isa_init(isa_bus, 0, MAX_ISA_SERIAL_PORTS);
     parallel_hds_isa_init(isa_bus, MAX_PARALLEL_PORTS);
@@ -1152,7 +1152,11 @@ static void pc_superio_init(ISABus *isa_bus, bool create_fdctrl, bool no_vmport)
         create_fdctrl |= !!fd[i];
     }
     if (create_fdctrl) {
-        fdctrl_init_isa(isa_bus, fd);
+        fdc = isa_new(TYPE_ISA_FDC);
+        if (fdc) {
+            isa_realize_and_unref(fdc, isa_bus, &error_fatal);
+            isa_fdc_init_drives(fdc, fd);
+        }
     }
 
     i8042 = isa_create_simple(isa_bus, "i8042");

include/hw/block/fdc.h

@@ -10,7 +10,6 @@
 #define TYPE_ISA_FDC "isa-fdc"
 
 void isa_fdc_init_drives(ISADevice *fdc, DriveInfo **fds);
-ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds);
 void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
                         hwaddr mmio_base, DriveInfo **fds);
 void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,