diff --git a/hw/block/fdc-sysbus.c b/hw/block/fdc-sysbus.c
index 57fc8773f1..86ea51d003 100644
--- a/hw/block/fdc-sysbus.c
+++ b/hw/block/fdc-sysbus.c
@@ -94,18 +94,14 @@ static void fdctrl_handle_tc(void *opaque, int irq, int level)
     trace_fdctrl_tc_pulse(level);
 }
 
-void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
-                        hwaddr mmio_base, DriveInfo **fds)
+void fdctrl_init_sysbus(qemu_irq irq, hwaddr mmio_base, DriveInfo **fds)
 {
-    FDCtrl *fdctrl;
     DeviceState *dev;
     SysBusDevice *sbd;
     FDCtrlSysBus *sys;
 
     dev = qdev_new("sysbus-fdc");
     sys = SYSBUS_FDC(dev);
-    fdctrl = &sys->state;
-    fdctrl->dma_chann = dma_chann; /* FIXME */
     sbd = SYS_BUS_DEVICE(dev);
     sysbus_realize_and_unref(sbd, &error_fatal);
     sysbus_connect_irq(sbd, 0, irq);
@@ -138,6 +134,16 @@ static void sysbus_fdc_common_instance_init(Object *obj)
     FDCtrlSysBus *sys = SYSBUS_FDC(obj);
     FDCtrl *fdctrl = &sys->state;
 
+    /*
+     * DMA is not currently supported for sysbus floppy controllers.
+     * If we wanted to add support then probably the best approach is
+     * to have a QOM link property 'dma-controller' which the board
+     * code can set to an instance of IsaDmaClass, and an integer
+     * property 'dma-channel', so that we can set fdctrl->dma and
+     * fdctrl->dma_chann accordingly.
+     */
+    fdctrl->dma_chann = -1;
+
     qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */
 
     memory_region_init_io(&fdctrl->iomem, obj,
diff --git a/hw/mips/jazz.c b/hw/mips/jazz.c
index 6598d7dddd..96dc6ab32d 100644
--- a/hw/mips/jazz.c
+++ b/hw/mips/jazz.c
@@ -353,7 +353,7 @@ static void mips_jazz_init(MachineState *machine,
         fds[n] = drive_get(IF_FLOPPY, 0, n);
     }
     /* FIXME: we should enable DMA with a custom IsaDma device */
-    fdctrl_init_sysbus(qdev_get_gpio_in(rc4030, 1), -1, 0x80003000, fds);
+    fdctrl_init_sysbus(qdev_get_gpio_in(rc4030, 1), 0x80003000, fds);
 
     /* Real time clock */
     mc146818_rtc_init(isa_bus, 1980, NULL);
diff --git a/include/hw/block/fdc.h b/include/hw/block/fdc.h
index 1ecca7cac7..35248c0837 100644
--- a/include/hw/block/fdc.h
+++ b/include/hw/block/fdc.h
@@ -10,8 +10,7 @@
 #define TYPE_ISA_FDC "isa-fdc"
 
 void isa_fdc_init_drives(ISADevice *fdc, DriveInfo **fds);
-void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
-                        hwaddr mmio_base, DriveInfo **fds);
+void fdctrl_init_sysbus(qemu_irq irq, hwaddr mmio_base, DriveInfo **fds);
 void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,
                        DriveInfo **fds, qemu_irq *fdc_tc);