hw/virtio/virtio-pci: Use pow2ceil() rather than hand-calculation
Use the utility function pow2ceil() for rounding up to the next
largest power of 2, rather than inline calculation.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 1437741192-20955-3-git-send-email-peter.maydell@linaro.org
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index c024161..43b300f 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1505,9 +1505,7 @@
if (legacy) {
size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev)
+ virtio_bus_get_vdev_config_len(bus);
- if (size & (size - 1)) {
- size = 1 << qemu_fls(size);
- }
+ size = pow2ceil(size);
memory_region_init_io(&proxy->bar, OBJECT(proxy),
&virtio_pci_config_ops,
