Shouldn't update assigned irq if assigned device's interrupt pin is 0, which
means uninitialized or don't support INTx.
Signed-off-by: Sheng Yang <sheng@xxxxxxxxxxxxxxx>
---
qemu/hw/device-assignment.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/qemu/hw/device-assignment.c b/qemu/hw/device-assignment.c
index b0b90c1..411ccc5 100644
--- a/qemu/hw/device-assignment.c
+++ b/qemu/hw/device-assignment.c
@@ -590,6 +590,10 @@ static int assign_irq(AssignedDevInfo *adev)
AssignedDevice *dev = adev->assigned_dev;
int irq, r = 0;
+ /* Interrupt PIN 0 means don't use INTx */
+ if (pci_read_byte(dev->pdev, PCI_INTERRUPT_PIN) == 0)
+ return 0;
+
irq = pci_map_irq(&dev->dev, dev->intpin);
irq = piix_get_irq(irq);
--
1.5.4.5
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