[PATCH v4 8/9] hw/block/fdc-sysbus: Add 'dma-channel' property

[Philippe Mathieu-Daudé]

QDev properties to be set before the device is realized should
be exposed as a Property with a DEFINE_PROP_XXX() macro, then
accessed with the equivalent qdev_prop_set_xxx() API.

Do this with the FDCtrlSysBus 'dma-channel' property: convert
it to int32_t, default-initialize with DEFINE_PROP_INT32() and
use qdev_prop_set_int32() to set its value in fdctrl_init_sysbus().

Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/block/fdc-internal.h | 2 +-
 hw/block/fdc-sysbus.c   | 9 ++-------
 2 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/hw/block/fdc-internal.h b/hw/block/fdc-internal.h
index 278de725e69..29b318f7525 100644
--- a/hw/block/fdc-internal.h
+++ b/hw/block/fdc-internal.h
@@ -96,7 +96,7 @@ struct FDCtrl {
     qemu_irq irq;
     /* Controller state */
     QEMUTimer *result_timer;
-    int dma_chann;
+    int32_t dma_chann;
     uint8_t phase;
     IsaDma *dma;
     /* Controller's identification */
diff --git a/hw/block/fdc-sysbus.c b/hw/block/fdc-sysbus.c
index 8f94c2efb63..74c7c8f2e01 100644
--- a/hw/block/fdc-sysbus.c
+++ b/hw/block/fdc-sysbus.c
@@ -106,15 +106,11 @@ void sysbus_fdc_init_drives(SysBusDevice *dev, DriveInfo 
**fds)
 void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
                         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 */
+    qdev_prop_set_int32(dev, "dma-channel", dma_chann);
     sbd = SYS_BUS_DEVICE(dev);
     sysbus_realize_and_unref(sbd, &error_fatal);
     sysbus_connect_irq(sbd, 0, irq);
@@ -131,8 +127,6 @@ static void sysbus_fdc_common_initfn(Object *obj)
     FDCtrlSysBus *sys = SYSBUS_FDC(obj);
     FDCtrl *fdctrl = &sys->state;
 
-    fdctrl->dma_chann = -1;
-
     qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */
 
     memory_region_init_io(&fdctrl->iomem, obj,
@@ -173,6 +167,7 @@ static Property sysbus_fdc_properties[] = {
     DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback,
                         FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
                         FloppyDriveType),
+    DEFINE_PROP_INT32("dma-channel", FDCtrlSysBus, state.dma_chann, -1),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-- 
2.26.3