[Qemu-stable] [PATCH] fix wrong return value of verify_irqchip_in_kernel()

[Talons Lee]

This was introduced by a recent change of adding return value to function verify_irqchip_in_kernel(),

VMs with legacy PCI pass-though device attached will fail after upgrade QEMU from 2.8 to 2.10.

Signed-off-by: Talons Lee <address@hidden>

diff --git a/hw/i386/kvm/pci-assign.c b/hw/i386/kvm/pci-assign.c

index 33e20cb3e8..13f8b7aac0 100644

--- a/hw/i386/kvm/pci-assign.c

+++ b/hw/i386/kvm/pci-assign.c

@@ -827,10 +827,10 @@ static void assign_device(AssignedDevice *dev, Error **errp)

 static int verify_irqchip_in_kernel(Error **errp)

 {

     if (kvm_irqchip_in_kernel()) {

-        return -1;

+        return 0;

     }

     error_setg(errp, "pci-assign requires KVM with in-kernel irqchip enabled");

-    return 0;

+    return -1;

 }

 static int assign_intx(AssignedDevice *dev, Error **errp)