[patch 04/10] qdio: Refresh buffer states for IQDIO Asynchronous output queue

[Martin Schwidefsky]

From: Klaus D. Wacker <kdwacker@xxxxxxxxxx>

Hipersocket Multicast queue works asynchronously. When sending buffers,
the buffer state change may happen delayed. The tasklet for checking
changes in the outbound queue excluded IQDIO async queues from this
process. This created either a hang situation when the queue ran full,
or presented a hang situation a interface close time.
The tasklet processing is changed to include IQDIO async queues when
requesting buffer state refresh.

Signed-off-by: Klaus D. Wacker <kdwacker@xxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
---

 drivers/s390/cio/qdio.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: quilt-2.6/drivers/s390/cio/qdio.c
===================================================================
--- quilt-2.6.orig/drivers/s390/cio/qdio.c
+++ quilt-2.6/drivers/s390/cio/qdio.c
@@ -742,7 +742,8 @@ qdio_get_outbound_buffer_frontier(struct
 	first_not_to_check=f+qdio_min(atomic_read(&q->number_of_buffers_used),
 				      (QDIO_MAX_BUFFERS_PER_Q-1));
 
-	if ((!q->is_iqdio_q)&&(!q->hydra_gives_outbound_pcis))
+	if (((!q->is_iqdio_q) && (!q->hydra_gives_outbound_pcis)) ||
+		 (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH))
 		SYNC_MEMORY;
 
 check_next:

-- 
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.

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