aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/xen/xen-pciback/pciback_ops.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/xen/xen-pciback/pciback_ops.c')
-rw-r--r--drivers/xen/xen-pciback/pciback_ops.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
index 029f33ddb8bf..d0696ce31e9b 100644
--- a/drivers/xen/xen-pciback/pciback_ops.c
+++ b/drivers/xen/xen-pciback/pciback_ops.c
@@ -70,6 +70,13 @@ static void xen_pcibk_control_isr(struct pci_dev *dev, int reset)
enable ? "enable" : "disable");
if (enable) {
+ /*
+ * The MSI or MSI-X should not have an IRQ handler. Otherwise
+ * if the guest terminates we BUG_ON in free_msi_irqs.
+ */
+ if (dev->msi_enabled || dev->msix_enabled)
+ goto out;
+
rc = request_irq(dev_data->irq,
xen_pcibk_guest_interrupt, IRQF_SHARED,
dev_data->irq_name, dev);