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Diffstat (limited to 'drivers/s390/cio/qdio_main.c')
-rw-r--r--drivers/s390/cio/qdio_main.c24
1 files changed, 11 insertions, 13 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 730c4e68094b..4142c85e77d8 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -319,9 +319,7 @@ static int qdio_siga_output(struct qdio_q *q, unsigned int *busy_bit,
int retries = 0, cc;
unsigned long laob = 0;
- WARN_ON_ONCE(aob && ((queue_type(q) != QDIO_IQDIO_QFMT) ||
- !q->u.out.use_cq));
- if (q->u.out.use_cq && aob != 0) {
+ if (aob) {
fc = QDIO_SIGA_WRITEQ;
laob = aob;
}
@@ -621,9 +619,6 @@ static inline unsigned long qdio_aob_for_buffer(struct qdio_output_q *q,
{
unsigned long phys_aob = 0;
- if (!q->use_cq)
- return 0;
-
if (!q->aobs[bufnr]) {
struct qaob *aob = qdio_allocate_aob();
q->aobs[bufnr] = aob;
@@ -1308,6 +1303,8 @@ static void qdio_detect_hsicq(struct qdio_irq *irq_ptr)
for_each_output_queue(irq_ptr, q, i) {
if (use_cq) {
+ if (multicast_outbound(q))
+ continue;
if (qdio_enable_async_operation(&q->u.out) < 0) {
use_cq = 0;
continue;
@@ -1553,18 +1550,19 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
/* One SIGA-W per buffer required for unicast HSI */
WARN_ON_ONCE(count > 1 && !multicast_outbound(q));
- phys_aob = qdio_aob_for_buffer(&q->u.out, bufnr);
+ if (q->u.out.use_cq)
+ phys_aob = qdio_aob_for_buffer(&q->u.out, bufnr);
rc = qdio_kick_outbound_q(q, phys_aob);
} else if (need_siga_sync(q)) {
rc = qdio_siga_sync_q(q);
+ } else if (count < QDIO_MAX_BUFFERS_PER_Q &&
+ get_buf_state(q, prev_buf(bufnr), &state, 0) > 0 &&
+ state == SLSB_CU_OUTPUT_PRIMED) {
+ /* The previous buffer is not processed yet, tack on. */
+ qperf_inc(q, fast_requeue);
} else {
- /* try to fast requeue buffers */
- get_buf_state(q, prev_buf(bufnr), &state, 0);
- if (state != SLSB_CU_OUTPUT_PRIMED)
- rc = qdio_kick_outbound_q(q, 0);
- else
- qperf_inc(q, fast_requeue);
+ rc = qdio_kick_outbound_q(q, 0);
}
/* in case of SIGA errors we must process the error immediately */