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pci: clean up resetting of IRQs 

pci_device_reset will deassert the INTX pins, and this will make the
irq_count array all-zeroes.  Check that this is the case, and remove
the existing loop which might even unsync irq_count and irq_state.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-12-06 17:54:25 +01:00 committed by Michael S. Tsirkin
parent 81e3e75b64
commit 9bdbbfc3a0
1 changed files with 4 additions and 3 deletions
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7
hw/pci/pci.c
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@ -217,15 +217,16 @@ static int pcibus_reset(BusState *qbus)
PCIBus *bus = DO_UPCAST(PCIBus, qbus, qbus);
int i;
for (i = 0; i < bus->nirq; i++) {
bus->irq_count[i] = 0;
}
for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) {
if (bus->devices[i]) {
pci_device_reset(bus->devices[i]);
}
}
for (i = 0; i < bus->nirq; i++) {
assert(bus->irq_count[i] == 0);
}
/* topology traverse is done by pci_bus_reset().
Tell qbus/qdev walker not to traverse the tree */
return 1;