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authorMichael S. Tsirkin <mst@redhat.com>2009-11-29 17:52:00 +0200
committerMichael S. Tsirkin <mst@redhat.com>2010-03-02 13:41:14 +0200
commitbc505f373979692d51a86d40925f77a8b09d17b9 (patch)
tree9a40aee54a4010af3eb0209db49f1193d4e45511
parent3119815912a220bdac943dfbdfee640414c0c611 (diff)
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 <agraf@suse.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-rw-r--r--drivers/virtio/virtio_pci.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 1b657321699..625447f645d 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