rc = virtqueue_get_buf(chan->vq, &len);
if (rc != NULL) {
- if (!chan->ring_bufs_avail) {
- chan->ring_bufs_avail = 1;
- wake_up(chan->vc_wq);
- }
+ chan->ring_bufs_avail = 1;
spin_unlock_irqrestore(&chan->lock, flags);
+ /* Wakeup if anyone waiting for VirtIO ring space. */
+ wake_up(chan->vc_wq);
P9_DPRINTK(P9_DEBUG_TRANS, ": rc %p\n", rc);
P9_DPRINTK(P9_DEBUG_TRANS, ": lookup tag %d\n",
rc->tag);