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-rw-r--r--drivers/virtio/virtio_pci.c6
-rw-r--r--include/linux/virtio_pci.h2
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 192687e3a56a..26f787ddd5ff 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -311,6 +311,12 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
if (pci_dev->device < 0x1000 || pci_dev->device > 0x103f)
return -ENODEV;
+ if (pci_dev->revision != VIRTIO_PCI_ABI_VERSION) {
+ printk(KERN_ERR "virtio_pci: expected ABI version %d, got %d\n",
+ VIRTIO_PCI_ABI_VERSION, pci_dev->revision);
+ return -ENODEV;
+ }
+
/* allocate our structure and fill it out */
vp_dev = kzalloc(sizeof(struct virtio_pci_device), GFP_KERNEL);
if (vp_dev == NULL)
diff --git a/include/linux/virtio_pci.h b/include/linux/virtio_pci.h
index 860eb37bfa07..b3151659cf49 100644
--- a/include/linux/virtio_pci.h
+++ b/include/linux/virtio_pci.h
@@ -52,4 +52,6 @@
* configuration space */
#define VIRTIO_PCI_CONFIG 20
+/* Virtio ABI version, this must match exactly */
+#define VIRTIO_PCI_ABI_VERSION 0
#endif