summaryrefslogtreecommitdiffstats
path: root/drivers/vfio
diff options
context:
space:
mode:
authorAlex Williamson <alex.williamson@redhat.com>2016-09-26 21:52:19 +0200
committerAlex Williamson <alex.williamson@redhat.com>2016-09-26 21:52:19 +0200
commitc93a97ee0583cd65adaf872e7cc402493eae92a7 (patch)
treeb36343f50b4951020fc9b7e099f2b7db640eb3e8 /drivers/vfio
parentvfio-pci: Virtualize PCIe & AF FLR (diff)
downloadlinux-c93a97ee0583cd65adaf872e7cc402493eae92a7.tar.xz
linux-c93a97ee0583cd65adaf872e7cc402493eae92a7.zip
vfio-pci: Disable INTx after MSI/X teardown
The MSI/X shutdown path can gratuitously enable INTx, which is not something we want to happen if we're dealing with broken INTx device. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
-rw-r--r--drivers/vfio/pci/vfio_pci_intrs.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c
index 152b43822ef1..aa23e9a4a22f 100644
--- a/drivers/vfio/pci/vfio_pci_intrs.c
+++ b/drivers/vfio/pci/vfio_pci_intrs.c
@@ -414,6 +414,13 @@ static void vfio_msi_disable(struct vfio_pci_device *vdev, bool msix)
} else
pci_disable_msi(pdev);
+ /*
+ * Both disable paths above use pci_intx_for_msi() to clear DisINTx
+ * via their shutdown paths. Restore for NoINTx devices.
+ */
+ if (vdev->nointx)
+ pci_intx(pdev, 0);
+
vdev->irq_type = VFIO_PCI_NUM_IRQS;
vdev->num_ctx = 0;
kfree(vdev->ctx);