From 344686136d73501a18a9621de690ff7824a3d129 Mon Sep 17 00:00:00 2001 From: Shaoqin Huang Date: Thu, 20 Oct 2022 23:27:33 -0700 Subject: virtio_pci: use helper function is_power_of_2() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use helper function is_power_of_2() to check if num is power of two. Minor readability improvement. Signed-off-by: Shaoqin Huang Message-Id: <20221021062734.228881-2-shaoqin.huang@intel.com> Signed-off-by: Michael S. Tsirkin Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Xuan Zhuo --- drivers/virtio/virtio_pci_modern.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/virtio') 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); } -- cgit v1.2.3