desc = kmalloc((out + in) * sizeof(struct vring_desc), gfp);
if (!desc)
- return vq->vring.num;
+ return -ENOMEM;
/* Transfer entries from the sg list into the indirect page */
for (i = 0; i < out; i++) {
gfp_t gfp)
{
struct vring_virtqueue *vq = to_vvq(_vq);
- unsigned int i, avail, head, uninitialized_var(prev);
+ unsigned int i, avail, uninitialized_var(prev);
+ int head;
START_USE(vq);
* buffers, then go indirect. FIXME: tune this threshold */
if (vq->indirect && (out + in) > 1 && vq->num_free) {
head = vring_add_indirect(vq, sg, out, in, gfp);
- if (head != vq->vring.num)
+ if (likely(head >= 0))
goto add_head;
}