From bc505f373979692d51a86d40925f77a8b09d17b9 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 29 Nov 2009 17:52:00 +0200 Subject: virtio: set pci bus master enable bit As all virtio devices perform DMA, we must enable bus mastering for them to be spec compliant. This patch fixes hotplug of virtio devices with Linux guests and qemu 0.11-0.12. Tested-by: Alexander Graf Signed-off-by: Michael S. Tsirkin --- drivers/virtio/virtio_pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c index 1b6573216998..625447f645d9 100644 --- a/drivers/virtio/virtio_pci.c +++ b/drivers/virtio/virtio_pci.c @@ -649,6 +649,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev, goto out_req_regions; pci_set_drvdata(pci_dev, vp_dev); + pci_set_master(pci_dev); /* we use the subsystem vendor/device id as the virtio vendor/device * id. this allows us to use the same PCI vendor/device id for all -- cgit v1.2.3