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ide: Register vm change state handler once only

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We register the vm change state handler in a PCI BAR map() function.
This function can be called multiple times throughout the lifetime of a
PCI IDE device.  This results in duplicate vm change state handlers
being register, none of which are ever unregistered.

Instead, register the vm change state handler in the device's init
function once and for all.

piix tested, cmd646 and via not tested.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2010-12-16 15:54:06 +00:00 • committed by Kevin Wolf
parent ad7171394f
commit 61d9d6b091
3 changed files with 58 additions and 28 deletions
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18
hw/ide/cmd646.c
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@ -167,10 +167,6 @@ static void bmdma_map(PCIDevice *pci_dev, int region_num,
for(i = 0;i < 2; i++) {
BMDMAState *bm = &d->bmdma[i];
bmdma_init(&d->bus[i], bm);
bm->bus = d->bus+i;
qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,
&bm->dma);
if (i == 0) {
register_ioport_write(addr, 4, 1, bmdma_writeb_0, d);
@ -228,6 +224,7 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
uint8_t *pci_conf = d->dev.config;
qemu_irq *irq;
int i;
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_CMD);
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_CMD_646);
@ -253,10 +250,15 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
pci_conf[PCI_INTERRUPT_PIN] = 0x01; // interrupt on pin 1
irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
ide_bus_new(&d->bus[0], &d->dev.qdev, 0);
ide_bus_new(&d->bus[1], &d->dev.qdev, 1);
ide_init2(&d->bus[0], irq[0]);
ide_init2(&d->bus[1], irq[1]);
for (i = 0; i < 2; i++) {
ide_bus_new(&d->bus[i], &d->dev.qdev, i);
ide_init2(&d->bus[i], irq[i]);
bmdma_init(&d->bus[i], &d->bmdma[i]);
bm->bus = &d->bus[i];
qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,
&d->bmdma[i]->dma);
}
vmstate_register(&dev->qdev, 0, &vmstate_ide_pci, d);
qemu_register_reset(cmd646_reset, d);