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[Qemu-block] [PATCH v2 2/6] hw/virtio/virtio-pci: Use pow2ceil() rather


From: Peter Maydell
Subject: [Qemu-block] [PATCH v2 2/6] hw/virtio/virtio-pci: Use pow2ceil() rather than hand-calculation
Date: Fri, 24 Jul 2015 13:33:08 +0100

Use the utility function pow2ceil() for rounding up to the next
largest power of 2, rather than inline calculation.

Signed-off-by: Peter Maydell <address@hidden>
---
 hw/virtio/virtio-pci.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 283401a..845f52f 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1497,9 +1497,7 @@ static void virtio_pci_device_plugged(DeviceState *d, 
Error **errp)
     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,
-- 
1.9.1




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