diff --git a/hw/fdc.c b/hw/fdc.c
index 30d34e3f1d..bfa4e686fa 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -1888,6 +1888,26 @@ static int fdctrl_connect_drives(FDCtrl *fdctrl)
     return 0;
 }
 
+ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds)
+{
+    ISADevice *dev;
+
+    dev = isa_try_create(bus, "isa-fdc");
+    if (!dev) {
+        return NULL;
+    }
+
+    if (fds[0]) {
+        qdev_prop_set_drive_nofail(&dev->qdev, "driveA", fds[0]->bdrv);
+    }
+    if (fds[1]) {
+        qdev_prop_set_drive_nofail(&dev->qdev, "driveB", fds[1]->bdrv);
+    }
+    qdev_init_nofail(&dev->qdev);
+
+    return dev;
+}
+
 void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
                         target_phys_addr_t mmio_base, DriveInfo **fds)
 {
diff --git a/hw/fdc.h b/hw/fdc.h
index 55a8d732c1..1b32b17bef 100644
--- a/hw/fdc.h
+++ b/hw/fdc.h
@@ -1,32 +1,12 @@
 #ifndef HW_FDC_H
 #define HW_FDC_H
 
-#include "isa.h"
-#include "blockdev.h"
+#include "qemu-common.h"
 
 /* fdc.c */
 #define MAX_FD 2
 
-static inline ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds)
-{
-    ISADevice *dev;
-
-    dev = isa_try_create(bus, "isa-fdc");
-    if (!dev) {
-        return NULL;
-    }
-
-    if (fds[0]) {
-        qdev_prop_set_drive_nofail(&dev->qdev, "driveA", fds[0]->bdrv);
-    }
-    if (fds[1]) {
-        qdev_prop_set_drive_nofail(&dev->qdev, "driveB", fds[1]->bdrv);
-    }
-    qdev_init_nofail(&dev->qdev);
-
-    return dev;
-}
-
+ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds);
 void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
                         target_phys_addr_t mmio_base, DriveInfo **fds);
 void sun4m_fdctrl_init(qemu_irq irq, target_phys_addr_t io_base,
diff --git a/hw/ide/piix.c b/hw/ide/piix.c
index bcaa400e2d..f5a74c293a 100644
--- a/hw/ide/piix.c
+++ b/hw/ide/piix.c
@@ -22,11 +22,12 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
+
 #include <hw/hw.h>
 #include <hw/pc.h>
 #include <hw/pci.h>
 #include <hw/isa.h>
-#include "block.h"
+#include "blockdev.h"
 #include "sysemu.h"
 #include "dma.h"
 
diff --git a/hw/isa.h b/hw/isa.h
index f7bc4b5a95..6c6fd7fac9 100644
--- a/hw/isa.h
+++ b/hw/isa.h
@@ -9,8 +9,6 @@
 
 #define ISA_NUM_IRQS 16
 
-typedef struct ISADevice ISADevice;
-
 #define TYPE_ISA_DEVICE "isa-device"
 #define ISA_DEVICE(obj) \
      OBJECT_CHECK(ISADevice, (obj), TYPE_ISA_DEVICE)
diff --git a/hw/pc_sysfw.c b/hw/pc_sysfw.c
index f0d7c21b5c..b45f0acc7d 100644
--- a/hw/pc_sysfw.c
+++ b/hw/pc_sysfw.c
@@ -23,6 +23,7 @@
  * THE SOFTWARE.
  */
 
+#include "blockdev.h"
 #include "sysbus.h"
 #include "hw.h"
 #include "pc.h"
diff --git a/qemu-common.h b/qemu-common.h
index 91e056296d..8f87e413a7 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -239,6 +239,7 @@ typedef struct VLANState VLANState;
 typedef struct VLANClientState VLANClientState;
 typedef struct i2c_bus i2c_bus;
 typedef struct ISABus ISABus;
+typedef struct ISADevice ISADevice;
 typedef struct SMBusDevice SMBusDevice;
 typedef struct PCIHostState PCIHostState;
 typedef struct PCIExpressHost PCIExpressHost;