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| author | Shaoqin Huang <shaoqin.huang@intel.com> | 2022-10-21 08:27:33 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-12-28 11:28:09 +0100 |
| commit | 344686136d73501a18a9621de690ff7824a3d129 (patch) | |
| tree | 0395b23205142f6e9dd4de7429c757df130096b9 /drivers/virtio | |
| parent | vdpa/mlx5: Avoid overwriting CVQ iotlb (diff) | |
| download | linux-344686136d73501a18a9621de690ff7824a3d129.tar.xz linux-344686136d73501a18a9621de690ff7824a3d129.zip | |
virtio_pci: use helper function is_power_of_2()
Use helper function is_power_of_2() to check if num is power of two.
Minor readability improvement.
Signed-off-by: Shaoqin Huang <shaoqin.huang@intel.com>
Message-Id: <20221021062734.228881-2-shaoqin.huang@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_pci_modern.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index c3b9f2761849..207294bd7b9d 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -310,7 +310,7 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, if (!num || vp_modern_get_queue_enable(mdev, index)) return ERR_PTR(-ENOENT); - if (num & (num - 1)) { + if (!is_power_of_2(num)) { dev_warn(&vp_dev->pci_dev->dev, "bad queue size %u", num); return ERR_PTR(-EINVAL); } |