KVM: change kvm_assign_device() to print return value when iommu_attach_device() fails
Change existing kernel error message to include return value from
iommu_attach_device() when it fails. This will help debug device
assignment failures more effectively.
Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
index 037cb67..18e1e30 100644
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -168,11 +168,7 @@
r = iommu_attach_device(domain, &pdev->dev);
if (r) {
- printk(KERN_ERR "assign device %x:%x:%x.%x failed",
- pci_domain_nr(pdev->bus),
- pdev->bus->number,
- PCI_SLOT(pdev->devfn),
- PCI_FUNC(pdev->devfn));
+ dev_err(&pdev->dev, "kvm assign device failed ret %d", r);
return r;
}