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path: root/drivers/virtio/virtio_mmio.c
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Diffstat (limited to 'drivers/virtio/virtio_mmio.c')
-rw-r--r--drivers/virtio/virtio_mmio.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index dfcecfd7aba1..c492a57531c6 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -360,7 +360,7 @@ static void vm_synchronize_cbs(struct virtio_device *vdev)
static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int index,
void (*callback)(struct virtqueue *vq),
- const char *name, bool ctx)
+ const char *name, u32 size, bool ctx)
{
struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev);
struct virtio_mmio_vq_info *info;
@@ -395,8 +395,11 @@ static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int in
goto error_new_virtqueue;
}
+ if (!size || size > num)
+ size = num;
+
/* Create the vring */
- vq = vring_create_virtqueue(index, num, VIRTIO_MMIO_VRING_ALIGN, vdev,
+ vq = vring_create_virtqueue(index, size, VIRTIO_MMIO_VRING_ALIGN, vdev,
true, true, ctx, vm_notify, callback, name);
if (!vq) {
err = -ENOMEM;
@@ -500,6 +503,7 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
}
vqs[i] = vm_setup_vq(vdev, queue_idx++, callbacks[i], names[i],
+ sizes ? sizes[i] : 0,
ctx ? ctx[i] : false);
if (IS_ERR(vqs[i])) {
vm_del_vqs(vdev);