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virtio_pci: Revert "virtio_pci: support the arg sizes of find_vqs()"

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This reverts commit cdb44806fc: the legacy
path is wrong and in fact can not support the proposed API since for a
legacy device we never communicate the vq size to the hypervisor.

Reported-by: Andres Freund <andres@anarazel.de>
Fixes: cdb44806fc ("virtio_pci: support the arg sizes of find_vqs()")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20220816053602.173815-5-mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin
2022-08-16 01:36:40 -04:00
parent c62f61b58f
commit 13aa8c6c37
4 changed files with 12 additions and 23 deletions
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10
drivers/virtio/virtio_pci_modern.c
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@@ -293,7 +293,6 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
unsigned int index,
void (*callback)(struct virtqueue *vq),
const char *name,
u32 size,
bool ctx,
u16 msix_vec)
{
@@ -311,18 +310,15 @@ 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 (!size || size > num)
size = num;
if (size & (size - 1)) {
dev_warn(&vp_dev->pci_dev->dev, "bad queue size %u", size);
if (num & (num - 1)) {
dev_warn(&vp_dev->pci_dev->dev, "bad queue size %u", num);
return ERR_PTR(-EINVAL);
}
info->msix_vector = msix_vec;
/* create the vring */
vq = vring_create_virtqueue(index, size,
vq = vring_create_virtqueue(index, num,
SMP_CACHE_BYTES, &vp_dev->vdev,
true, true, ctx,
vp_notify, callback, name);