- struct mv_xor_desc_slot *chain_head;
- chain_head = list_entry(mv_chan->chain.next,
- struct mv_xor_desc_slot,
- chain_node);
-
- mv_xor_start_new_chain(mv_chan, chain_head);
+ if (current_cleaned) {
+ /*
+ * current descriptor cleaned and removed, run
+ * from list head
+ */
+ iter = list_entry(mv_chan->chain.next,
+ struct mv_xor_desc_slot,
+ chain_node);
+ mv_xor_start_new_chain(mv_chan, iter);
+ } else {
+ if (!list_is_last(&iter->chain_node, &mv_chan->chain)) {
+ /*
+ * descriptors are still waiting after
+ * current, trigger them
+ */
+ iter = list_entry(iter->chain_node.next,
+ struct mv_xor_desc_slot,
+ chain_node);
+ mv_xor_start_new_chain(mv_chan, iter);
+ } else {
+ /*
+ * some descriptors are still waiting
+ * to be cleaned
+ */
+ tasklet_schedule(&mv_chan->irq_tasklet);
+ }
+ }