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Message-Id: <20110305010352.690887944@clark.kroah.org> Date: Fri, 04 Mar 2011 17:03:03 -0800 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...nel.org Cc: stable-review@...nel.org, torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, "Michael S. Tsirkin" <mst@...hat.com>, maximilian attems <max@...o.at> Subject: [09/18] virtio: set pci bus master enable bit 2.6.32-longterm review patch. If anyone has any objections, please let us know. ------------------ From: Michael S. Tsirkin <mst@...hat.com> commit bc505f373979692d51a86d40925f77a8b09d17b9 upstream. 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@...e.de> Signed-off-by: Michael S. Tsirkin <mst@...hat.com> Cc: maximilian attems <max@...o.at> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- drivers/virtio/virtio_pci.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/virtio/virtio_pci.c +++ b/drivers/virtio/virtio_pci.c @@ -647,6 +647,7 @@ static int __devinit virtio_pci_probe(st 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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