i82378/i82374: Do not create DMA controller twice

This fixes a crash in PReP emulation when using DMA controller to access
floppy drive.
Signed-off-by: NHervé Poussineau <hpoussin@reactos.org>
Signed-off-by: NAndreas Färber <andreas.faerber@web.de>

hw/i82374.c

@@ -38,6 +38,7 @@ do { fprintf(stderr, "i82374 ERROR: " fmt , ## __VA_ARGS__); } while (0)
 
 typedef struct I82374State {
     uint8_t commands[8];
+    qemu_irq out;
 } I82374State;
 
 static const VMStateDescription vmstate_i82374 = {
@@ -99,7 +100,7 @@ static uint32_t i82374_read_descriptor(void *opaque, uint32_t nport)
 
 static void i82374_init(I82374State *s)
 {
-    DMA_init(1, NULL);
+    DMA_init(1, &s->out);
     memset(s->commands, 0, sizeof(s->commands));
 }
 
@@ -132,6 +133,8 @@ static int i82374_isa_init(ISADevice *dev)
 
     i82374_init(s);
 
+    qdev_init_gpio_out(&dev->qdev, &s->out, 1);
+
     return 0;
 }
 

hw/i82378.c

@@ -170,6 +170,7 @@ static void i82378_init(DeviceState *dev, I82378State *s)
 {
     ISABus *isabus = DO_UPCAST(ISABus, qbus, qdev_get_child_bus(dev, "isa.0"));
     ISADevice *pit;
+    ISADevice *isa;
     qemu_irq *out0_irq;
 
     /* This device has:
@@ -199,8 +200,8 @@ static void i82378_init(DeviceState *dev, I82378State *s)
     pcspk_init(isabus, pit);
 
     /* 2 82C37 (dma) */
-    DMA_init(1, &s->out[1]);
-    isa_create_simple(isabus, "i82374");
+    isa = isa_create_simple(isabus, "i82374");
+    qdev_connect_gpio_out(&isa->qdev, 0, s->out[1]);
 
     /* timer */
     isa_create_simple(isabus, "mc146818rtc");