diff mbox

[14/16] kvm: fix irq 0 assignment

Message ID 1236865019-30321-15-git-send-email-sheng@linux.intel.com (mailing list archive)
State Accepted
Headers show

Commit Message

Sheng Yang March 12, 2009, 1:36 p.m. UTC 
Shouldn't update assigned irq if host irq is 0, which means uninitialized
or don't support INTx.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
---
 qemu/hw/device-assignment.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/qemu/hw/device-assignment.c b/qemu/hw/device-assignment.c
index 1cd4cf7..69f8e3a 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;
 
+    /* IRQ PIN 0 means not 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);