hw/ide: Extract IDEBus assignment into bmdma_init()

Every invocation of bmdma_init() is followed by `d->bmdma[i].bus = &d->bus[i]`.
Resolve this redundancy by extracting it into bmdma_init().

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20230531211043.41724-5-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

hw/ide/cmd646.c

@@ -297,7 +297,6 @@ static void pci_cmd646_ide_realize(PCIDevice *dev, Error **errp)
         ide_bus_init_output_irq(&d->bus[i], qdev_get_gpio_in(ds, i));
 
         bmdma_init(&d->bus[i], &d->bmdma[i], d);
-        d->bmdma[i].bus = &d->bus[i];
         ide_bus_register_restart_cb(&d->bus[i]);
     }
 }

hw/ide/pci.c

@@ -519,6 +519,7 @@ void bmdma_init(IDEBus *bus, BMDMAState *bm, PCIIDEState *d)
     bus->dma = &bm->dma;
     bm->irq = bus->irq;
     bus->irq = qemu_allocate_irq(bmdma_irq, bm, 0);
+    bm->bus = bus;
     bm->pci_dev = d;
 }
 

hw/ide/piix.c

@@ -144,7 +144,6 @@ static bool pci_piix_init_bus(PCIIDEState *d, unsigned i, Error **errp)
     ide_bus_init_output_irq(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));
 
     bmdma_init(&d->bus[i], &d->bmdma[i], d);
-    d->bmdma[i].bus = &d->bus[i];
     ide_bus_register_restart_cb(&d->bus[i]);
 
     return true;

hw/ide/sii3112.c

@@ -287,7 +287,6 @@ static void sii3112_pci_realize(PCIDevice *dev, Error **errp)
         ide_bus_init_output_irq(&s->bus[i], qdev_get_gpio_in(ds, i));
 
         bmdma_init(&s->bus[i], &s->bmdma[i], s);
-        s->bmdma[i].bus = &s->bus[i];
         ide_bus_register_restart_cb(&s->bus[i]);
     }
 }

hw/ide/via.c

@@ -196,7 +196,6 @@ static void via_ide_realize(PCIDevice *dev, Error **errp)
         ide_bus_init_output_irq(&d->bus[i], qdev_get_gpio_in(ds, i));
 
         bmdma_init(&d->bus[i], &d->bmdma[i], d);
-        d->bmdma[i].bus = &d->bus[i];
         ide_bus_register_restart_cb(&d->bus[i]);
     }
 }