From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shuah Khan Subject: [PATCH] virt/kvm: change kvm_assign_device() to print return value when iommu_attach_device() fails Date: Mon, 08 Oct 2012 18:36:11 -0600 Message-ID: <1349742971.2674.75.camel@lorien2> Reply-To: shuah.khan@hp.com Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, LKML , shuahkhan@gmail.com To: avi@redhat.com, mtosatti@redhat.com Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org 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 --- virt/kvm/iommu.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) 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 @@ int kvm_assign_device(struct kvm *kvm, 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; } -- 1.7.9.5